221647127537142 has 80 divisors (see below), whose sum is σ = 504806709854832. Its totient is φ = 72669591910080.

The previous prime is 221647127537111. The next prime is 221647127537221. The reversal of 221647127537142 is 241735721746122.

221647127537142 is a `hidden beast` number, since 2 + 2 + 1 + 6 + 4 + 71 + 27 + 537 + 14 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 500865408 + ... + 501307740.

Almost surely, 2^{221647127537142} is an apocalyptic number.

221647127537142 is an abundant number, since it is smaller than the sum of its proper divisors (283159582317690).

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

221647127537142 is a wasteful number, since it uses less digits than its factorization.

221647127537142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493115 (or 493106 counting only the distinct ones).

The product of its digits is 7902720, while the sum is 54.

The spelling of 221647127537142 in words is "two hundred twenty-one trillion, six hundred forty-seven billion, one hundred twenty-seven million, five hundred thirty-seven thousand, one hundred forty-two".