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22020112020 = 2235367001867
BaseRepresentation
bin10100100000100000…
…000011111010010100
32002211121201120222110
4110200200003322110
5330044122041040
614041011231020
71406451602214
oct244040037224
962747646873
1022020112020
11937a863095
1243265a8470
1320cc0743aa
1410cc6d8244
1588d2a2980
hex520803e94

22020112020 has 24 divisors (see below), whose sum is σ = 61656313824. Its totient is φ = 5872029856.

The previous prime is 22020112007. The next prime is 22020112027. The reversal of 22020112020 is 2021102022.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 22020111987 and 22020112005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22020112027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183500874 + ... + 183500993.

It is an arithmetic number, because the mean of its divisors is an integer number (2569013076).

Almost surely, 222020112020 is an apocalyptic number.

22020112020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22020112020 is an abundant number, since it is smaller than the sum of its proper divisors (39636201804).

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

22020112020 is a wasteful number, since it uses less digits than its factorization.

22020112020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367001879 (or 367001877 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 22020112020 its reverse (2021102022), we get a palindrome (24041214042).

It can be divided in two parts, 220201 and 12020, that added together give a triangular number (232221 = T681).

The spelling of 22020112020 in words is "twenty-two billion, twenty million, one hundred twelve thousand, twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 367001867 734003734 1101005601 1468007468 1835009335 2202011202 3670018670 4404022404 5505028005 7340037340 11010056010 22020112020