22021100102002 has 16 divisors (see below), whose sum is σ = 33156212342040. Its totient is φ = 10969033687168.

The previous prime is 22021100101969. The next prime is 22021100102009. The reversal of 22021100102002 is 20020100112022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 21533674112721 + 487425989281 = 4640439^2 + 698159^2 .

It is not an unprimeable number, because it can be changed into a prime (22021100102009) 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, 9095478 + ... + 11259214.

Almost surely, 2^{22021100102002} is an apocalyptic number.

22021100102002 is a deficient number, since it is larger than the sum of its proper divisors (11135112240038).

22021100102002 is a wasteful number, since it uses less digits than its factorization.

22021100102002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2182925.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22021100102002 its reverse (20020100112022), we get a palindrome (42041200214024).

The spelling of 22021100102002 in words is "twenty-two trillion, twenty-one billion, one hundred million, one hundred two thousand, two".