22221021120002 has 16 divisors (see below), whose sum is σ = 33994086178680. Its totient is φ = 10890074587392.

The previous prime is 22221021119977. The next prime is 22221021120007. The reversal of 22221021120002 is 20002112012222.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 20026886969881 + 2194134150121 = 4475141^2 + 1481261^2 .

It is not an unprimeable number, because it can be changed into a prime (22221021120007) 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, 103774253 + ... + 103988160.

Almost surely, 2^{22221021120002} is an apocalyptic number.

22221021120002 is a deficient number, since it is larger than the sum of its proper divisors (11773065058678).

22221021120002 is a wasteful number, since it uses less digits than its factorization.

22221021120002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207763477.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 22221021120002 its reverse (20002112012222), we get a palindrome (42223133132224).

The spelling of 22221021120002 in words is "twenty-two trillion, two hundred twenty-one billion, twenty-one million, one hundred twenty thousand, two".