221950053252 has 72 divisors (see below), whose sum is σ = 563082426816. Its totient is φ = 73714567104.

The previous prime is 221950053251. The next prime is 221950053287. The reversal of 221950053252 is 252350059122.

221950053252 is a `hidden beast` number, since 2 + 21 + 9 + 50 + 0 + 532 + 52 = 666.

It is a super-2 number, since 2×221950053252² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (221950053251) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11438703 + ... + 11458089.

Almost surely, 2^221950053252 is an apocalyptic number.

It is an amenable number.

221950053252 is an abundant number, since it is smaller than the sum of its proper divisors (341132373564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221950053252 is a wasteful number, since it uses less digits than its factorization.

221950053252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20537 (or 20532 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The spelling of 221950053252 in words is "two hundred twenty-one billion, nine hundred fifty million, fifty-three thousand, two hundred fifty-two".