22012200021018 has 32 divisors (see below), whose sum is σ = 46666861390656. Its totient is φ = 6897967388928.

The previous prime is 22012200021011. The next prime is 22012200021079. The reversal of 22012200021018 is 81012000221022.

It is a junction number, because it is equal to n+sod(n) for n = 22012200020985 and 22012200021003.

It is not an unprimeable number, because it can be changed into a prime (22012200021011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122110321 + ... + 122290452.

It is an arithmetic number, because the mean of its divisors is an integer number (1458339418458).

Almost surely, 2^{22012200021018} is an apocalyptic number.

22012200021018 is an abundant number, since it is smaller than the sum of its proper divisors (24654661369638).

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

22012200021018 is a wasteful number, since it uses less digits than its factorization.

22012200021018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244401678.

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

The spelling of 22012200021018 in words is "twenty-two trillion, twelve billion, two hundred million, twenty-one thousand, eighteen".