22155202002 has 16 divisors (see below), whose sum is σ = 44542397952. Its totient is φ = 7346401680.

The previous prime is 22155201989. The next prime is 22155202031. The reversal of 22155202002 is 20020255122.

It is a self number, because there is not a number n which added to its sum of digits gives 22155202002.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9665173 + ... + 9667464.

It is an arithmetic number, because the mean of its divisors is an integer number (2783899872).

Almost surely, 2^22155202002 is an apocalyptic number.

22155202002 is an abundant number, since it is smaller than the sum of its proper divisors (22387195950).

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

22155202002 is a wasteful number, since it uses less digits than its factorization.

22155202002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19332833.

The product of its (nonzero) digits is 800, while the sum is 21.

Adding to 22155202002 its reverse (20020255122), we get a palindrome (42175457124).

The spelling of 22155202002 in words is "twenty-two billion, one hundred fifty-five million, two hundred two thousand, two".