22221115204 has 12 divisors (see below), whose sum is σ = 38889840528. Its totient is φ = 11109732200.

The previous prime is 22221115199. The next prime is 22221115211. The reversal of 22221115204 is 40251112222.

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, 143662 + ... + 255109.

It is an arithmetic number, because the mean of its divisors is an integer number (3240820044).

Almost surely, 2^22221115204 is an apocalyptic number.

It is an amenable number.

22221115204 is a deficient number, since it is larger than the sum of its proper divisors (16668725324).

22221115204 is a wasteful number, since it uses less digits than its factorization.

22221115204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412706 (or 412704 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

Adding to 22221115204 its reverse (40251112222), we get a palindrome (62472227426).

The spelling of 22221115204 in words is "twenty-two billion, two hundred twenty-one million, one hundred fifteen thousand, two hundred four".