221020758968 has 16 divisors (see below), whose sum is σ = 432431920080. Its totient is φ = 105705580288.

The previous prime is 221020758967. The next prime is 221020758971. The reversal of 221020758968 is 869857020122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221020758961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 600599705 + ... + 600600072.

It is an arithmetic number, because the mean of its divisors is an integer number (27026995005).

Almost surely, 2^221020758968 is an apocalyptic number.

It is an amenable number.

221020758968 is a deficient number, since it is larger than the sum of its proper divisors (211411161112).

221020758968 is a wasteful number, since it uses less digits than its factorization.

221020758968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201199806 (or 1201199802 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 50.

The spelling of 221020758968 in words is "two hundred twenty-one billion, twenty million, seven hundred fifty-eight thousand, nine hundred sixty-eight".