22021221021112 has 32 divisors (see below), whose sum is σ = 41456561137920. Its totient is φ = 10966172031360.

The previous prime is 22021221021073. The next prime is 22021221021133. The reversal of 22021221021112 is 21112012212022.

It is a self number, because there is not a number n which added to its sum of digits gives 22021221021112.

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, 3065193 + ... + 7310119.

It is an arithmetic number, because the mean of its divisors is an integer number (1295517535560).

Almost surely, 2^{22021221021112} is an apocalyptic number.

It is an amenable number.

22021221021112 is a deficient number, since it is larger than the sum of its proper divisors (19435340116808).

22021221021112 is a wasteful number, since it uses less digits than its factorization.

22021221021112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4247551 (or 4247547 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 22021221021112 its reverse (21112012212022), we get a palindrome (43133233233134).

The spelling of 22021221021112 in words is "twenty-two trillion, twenty-one billion, two hundred twenty-one million, twenty-one thousand, one hundred twelve".