22001122022112 has 72 divisors (see below), whose sum is σ = 63043291551240. Its totient is φ = 7277724829440.

The previous prime is 22001122022111. The next prime is 22001122022167. The reversal of 22001122022112 is 21122022110022.

It is a happy number.

22001122022112 is a `hidden beast` number, since 2 + 200 + 11 + 220 + 221 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22001122022111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 291537787 + ... + 291613242.

It is an arithmetic number, because the mean of its divisors is an integer number (875601271545).

Almost surely, 2^{22001122022112} is an apocalyptic number.

It is an amenable number.

22001122022112 is an abundant number, since it is smaller than the sum of its proper divisors (41042169529128).

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

22001122022112 is a wasteful number, since it uses less digits than its factorization.

22001122022112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583151176 (or 583151165 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 22001122022112 its reverse (21122022110022), we get a palindrome (43123144132134).

It can be divided in two parts, 2200112 and 2022112, that added together give a palindrome (4222224).

The spelling of 22001122022112 in words is "twenty-two trillion, one billion, one hundred twenty-two million, twenty-two thousand, one hundred twelve".