22155202004 has 12 divisors (see below), whose sum is σ = 41754034644. Its totient is φ = 10225477824.

The previous prime is 22155201989. The next prime is 22155202031. The reversal of 22155202004 is 40020255122.

It can be written as a sum of positive squares in 2 ways, for example, as 10972562500 + 11182639504 = 104750^2 + 105748^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213030737 + ... + 213030840.

It is an arithmetic number, because the mean of its divisors is an integer number (3479502887).

Almost surely, 2^22155202004 is an apocalyptic number.

It is an amenable number.

22155202004 is a deficient number, since it is larger than the sum of its proper divisors (19598832640).

22155202004 is a wasteful number, since it uses less digits than its factorization.

22155202004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426061594 (or 426061592 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

Adding to 22155202004 its reverse (40020255122), we get a palindrome (62175457126).

The spelling of 22155202004 in words is "twenty-two billion, one hundred fifty-five million, two hundred two thousand, four".