221616932933 has 4 divisors (see below), whose sum is σ = 241763926848. Its totient is φ = 201469939020.

The previous prime is 221616932917. The next prime is 221616932947. The reversal of 221616932933 is 339239616122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 221616932933 - 2⁴ = 221616932917 is a prime.

It is a super-2 number, since 2×221616932933² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221616932903) 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, 10073496941 + ... + 10073496962.

It is an arithmetic number, because the mean of its divisors is an integer number (60440981712).

Almost surely, 2^221616932933 is an apocalyptic number.

It is an amenable number.

221616932933 is a deficient number, since it is larger than the sum of its proper divisors (20146993915).

221616932933 is a wasteful number, since it uses less digits than its factorization.

221616932933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20146993914.

The product of its digits is 629856, while the sum is 47.

The spelling of 221616932933 in words is "two hundred twenty-one billion, six hundred sixteen million, nine hundred thirty-two thousand, nine hundred thirty-three".