22220464664 has 16 divisors (see below), whose sum is σ = 41825489400. Its totient is φ = 11067000832.

The previous prime is 22220464639. The next prime is 22220464681. The reversal of 22220464664 is 46646402222.

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, 5401754 + ... + 5405865.

Almost surely, 2^22220464664 is an apocalyptic number.

It is an amenable number.

22220464664 is a deficient number, since it is larger than the sum of its proper divisors (19605024736).

22220464664 is a wasteful number, since it uses less digits than its factorization.

22220464664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10807882 (or 10807878 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 38.

Adding to 22220464664 its reverse (46646402222), we get a palindrome (68866866886).

The spelling of 22220464664 in words is "twenty-two billion, two hundred twenty million, four hundred sixty-four thousand, six hundred sixty-four".