221647614552252 has 108 divisors (see below), whose sum is σ = 651759305455440. Its totient is φ = 63326940348672.

The previous prime is 221647614552239. The next prime is 221647614552277. The reversal of 221647614552252 is 252255416746122.

221647614552252 is a `hidden beast` number, since 2 + 2 + 1 + 6 + 4 + 7 + 61 + 4 + 5 + 522 + 52 = 666.

221647614552252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 121230228 + ... + 123044964.

Almost surely, 2^{221647614552252} is an apocalyptic number.

It is an amenable number.

221647614552252 is an abundant number, since it is smaller than the sum of its proper divisors (430111690903188).

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

221647614552252 is a wasteful number, since it uses less digits than its factorization.

221647614552252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1884000 (or 1883988 counting only the distinct ones).

The product of its digits is 16128000, while the sum is 54.

The spelling of 221647614552252 in words is "two hundred twenty-one trillion, six hundred forty-seven billion, six hundred fourteen million, five hundred fifty-two thousand, two hundred fifty-two".