22001021122112 has 56 divisors (see below), whose sum is σ = 45565906970112. Its totient is φ = 10520046028800.

The previous prime is 22001021122099. The next prime is 22001021122117. The reversal of 22001021122112 is 21122112010022.

It is not an unprimeable number, because it can be changed into a prime (22001021122117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5564312 + ... + 8658152.

Almost surely, 2^{22001021122112} is an apocalyptic number.

It is an amenable number.

22001021122112 is an abundant number, since it is smaller than the sum of its proper divisors (23564885848000).

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

22001021122112 is a wasteful number, since it uses less digits than its factorization.

22001021122112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3098707 (or 3098697 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 22001021122112 its reverse (21122112010022), we get a palindrome (43123133132134).

The spelling of 22001021122112 in words is "twenty-two trillion, one billion, twenty-one million, one hundred twenty-two thousand, one hundred twelve".