52122664221 has 16 divisors (see below), whose sum is σ = 72565243200. Its totient is φ = 33236661248.

The previous prime is 52122664199. The next prime is 52122664259. The reversal of 52122664221 is 12246622125.

It is a cyclic number.

It is not a de Polignac number, because 52122664221 - 2⁵ = 52122664189 is a prime.

It is a super-2 number, since 2×52122664221² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52122664721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2790276 + ... + 2808893.

It is an arithmetic number, because the mean of its divisors is an integer number (4535327700).

Almost surely, 2^52122664221 is an apocalyptic number.

It is an amenable number.

52122664221 is a deficient number, since it is larger than the sum of its proper divisors (20442578979).

52122664221 is a wasteful number, since it uses less digits than its factorization.

52122664221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5599308.

The product of its digits is 23040, while the sum is 33.

The spelling of 52122664221 in words is "fifty-two billion, one hundred twenty-two million, six hundred sixty-four thousand, two hundred twenty-one".