221364567136 has 24 divisors (see below), whose sum is σ = 439138305144. Its totient is φ = 109837378560.

The previous prime is 221364567119. The next prime is 221364567157. The reversal of 221364567136 is 631765463122.

It is a happy number.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

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, 26399025 + ... + 26407408.

It is an arithmetic number, because the mean of its divisors is an integer number (18297429381).

Almost surely, 2^221364567136 is an apocalyptic number.

It is an amenable number.

221364567136 is a deficient number, since it is larger than the sum of its proper divisors (217773738008).

221364567136 is a wasteful number, since it uses less digits than its factorization.

221364567136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52806574 (or 52806566 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 46.

The spelling of 221364567136 in words is "two hundred twenty-one billion, three hundred sixty-four million, five hundred sixty-seven thousand, one hundred thirty-six".