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22111120200020 = 2251455775946693
BaseRepresentation
bin1010000011100001001010…
…11101110001000101010100
32220021210122222120101112112
411001300211131301011110
510344232033232400040
6115005413002410152
74441322112444455
oct501604535610524
986253588511475
1022111120200020
117055300a0a875
122591349500958
13c450ba149147
145662809ab12c
15285263482365
hex141c25771154

22111120200020 has 24 divisors (see below), whose sum is σ = 46436542792584. Its totient is φ = 8843840390016.

The previous prime is 22111120200011. The next prime is 22111120200031. The reversal of 22111120200020 is 2000202111122.

It can be written as a sum of positive squares in 4 ways, for example, as 1611650562064 + 20499469637956 = 1269508^2 + 4527634^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22111120199968 and 22111120200004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37682207 + ... + 38264486.

It is an arithmetic number, because the mean of its divisors is an integer number (1934855949691).

Almost surely, 222111120200020 is an apocalyptic number.

22111120200020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22111120200020 is an abundant number, since it is smaller than the sum of its proper divisors (24325422592564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22111120200020 is a wasteful number, since it uses less digits than its factorization.

22111120200020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75961259 (or 75961257 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 22111120200020 its reverse (2000202111122), we get a palindrome (24111322311142).

The spelling of 22111120200020 in words is "twenty-two trillion, one hundred eleven billion, one hundred twenty million, two hundred thousand, twenty".

Divisors: 1 2 4 5 10 20 14557 29114 58228 72785 145570 291140 75946693 151893386 303786772 379733465 759466930 1518933860 1105556010001 2211112020002 4422224040004 5527780050005 11055560100010 22111120200020