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11222113220 = 225684182021
BaseRepresentation
bin10100111001110001…
…11101101111000100
31001222002101102021222
422130320331233010
5140440330110340
65053320455512
7545044250153
oct123470755704
931862342258
1011222113220
11483965483a
12221231a598
13109ac54ba6
147865ab59a
1545a3158b5
hex29ce3dbc4

11222113220 has 24 divisors (see below), whose sum is σ = 23570170008. Its totient is φ = 4488134400.

The previous prime is 11222113213. The next prime is 11222113223. The reversal of 11222113220 is 2231122211.

It can be written as a sum of positive squares in 4 ways, for example, as 5752919104 + 5469194116 = 75848^2 + 73954^2 .

It is not an unprimeable number, because it can be changed into a prime (11222113223) by changing a digit.

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, 95810 + ... + 177830.

It is an arithmetic number, because the mean of its divisors is an integer number (982090417).

Almost surely, 211222113220 is an apocalyptic number.

11222113220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11222113220 is an abundant number, since it is smaller than the sum of its proper divisors (12348056788).

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

11222113220 is a wasteful number, since it uses less digits than its factorization.

11222113220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88871 (or 88869 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 11222113220 its reverse (2231122211), we get a palindrome (13453235431).

The spelling of 11222113220 in words is "eleven billion, two hundred twenty-two million, one hundred thirteen thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 6841 13682 27364 34205 68410 82021 136820 164042 328084 410105 820210 1640420 561105661 1122211322 2244422644 2805528305 5611056610 11222113220