22221210221112 has 64 divisors (see below), whose sum is σ = 63489738009600. Its totient is φ = 6348860611200.

The previous prime is 22221210221039. The next prime is 22221210221167. The reversal of 22221210221112 is 21112201212222.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20565814 + ... + 21619322.

It is an arithmetic number, because the mean of its divisors is an integer number (992027156400).

Almost surely, 2^{22221210221112} is an apocalyptic number.

It is an amenable number.

22221210221112 is an abundant number, since it is smaller than the sum of its proper divisors (41268527788488).

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

22221210221112 is a wasteful number, since it uses less digits than its factorization.

22221210221112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179076 (or 1179072 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 22221210221112 its reverse (21112201212222), we get a palindrome (43333411433334).

The spelling of 22221210221112 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred ten million, two hundred twenty-one thousand, one hundred twelve".