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22112010220 = 2255320860387
BaseRepresentation
bin10100100101111110…
…100111111111101100
32010002000122111121111
4110211332213333230
5330241133311340
614054053041404
71411645662046
oct244576477754
963060574544
1022112010220
119417720613
124351326264
13211510c321
1410da9baa96
158963a6aea
hex525fa7fec

22112010220 has 24 divisors (see below), whose sum is σ = 47311359984. Its totient is φ = 8677920576.

The previous prime is 22112010149. The next prime is 22112010257. The reversal of 22112010220 is 2201021122.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 22112010220.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10429134 + ... + 10431253.

It is an arithmetic number, because the mean of its divisors is an integer number (1971306666).

Almost surely, 222112010220 is an apocalyptic number.

22112010220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22112010220 is an abundant number, since it is smaller than the sum of its proper divisors (25199349764).

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

22112010220 is a wasteful number, since it uses less digits than its factorization.

22112010220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20860449 (or 20860447 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22112010220 its reverse (2201021122), we get a palindrome (24313031342).

The spelling of 22112010220 in words is "twenty-two billion, one hundred twelve million, ten thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 53 106 212 265 530 1060 20860387 41720774 83441548 104301935 208603870 417207740 1105600511 2211201022 4422402044 5528002555 11056005110 22112010220