22102111221112 has 32 divisors (see below), whose sum is σ = 44815996411200. Its totient is φ = 10158292497024.

The previous prime is 22102111221083. The next prime is 22102111221121. The reversal of 22102111221112 is 21112211120122.

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 22102111221112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 444578283 + ... + 444627994.

It is an arithmetic number, because the mean of its divisors is an integer number (1400499887850).

Almost surely, 2^{22102111221112} is an apocalyptic number.

It is an amenable number.

22102111221112 is an abundant number, since it is smaller than the sum of its proper divisors (22713885190088).

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

22102111221112 is a wasteful number, since it uses less digits than its factorization.

22102111221112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 889206535 (or 889206531 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 22102111221112 its reverse (21112211120122), we get a palindrome (43214322341234).

The spelling of 22102111221112 in words is "twenty-two trillion, one hundred two billion, one hundred eleven million, two hundred twenty-one thousand, one hundred twelve".