22120221111112 has 16 divisors (see below), whose sum is σ = 42155339413500. Its totient is φ = 10878797267520.

The previous prime is 22120221111049. The next prime is 22120221111139. The reversal of 22120221111112 is 21111112202122.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17695029250116 + 4425191860996 = 4206546^2 + 2103614^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22120221111112.

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 3 ways as a sum of consecutive naturals, for example, 22664160487 + ... + 22664161462.

Almost surely, 2^{22120221111112} is an apocalyptic number.

It is an amenable number.

22120221111112 is a deficient number, since it is larger than the sum of its proper divisors (20035118302388).

22120221111112 is a wasteful number, since it uses less digits than its factorization.

22120221111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45328322016 (or 45328322012 counting only the distinct ones).

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

Adding to 22120221111112 its reverse (21111112202122), we get a palindrome (43231333313234).

The spelling of 22120221111112 in words is "twenty-two trillion, one hundred twenty billion, two hundred twenty-one million, one hundred eleven thousand, one hundred twelve".