221534455610142 has 12 divisors (see below), whose sum is σ = 479991320488680. Its totient is φ = 73844818536708.

The previous prime is 221534455610137. The next prime is 221534455610147. The reversal of 221534455610142 is 241016554435122.

221534455610142 is a `hidden beast` number, since 2 + 2 + 1 + 5 + 3 + 4 + 45 + 561 + 0 + 1 + 42 = 666.

It is an interprime number because it is at equal distance from previous prime (221534455610137) and next prime (221534455610147).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221534455610147) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6153734878042 + ... + 6153734878077.

It is an arithmetic number, because the mean of its divisors is an integer number (39999276707390).

Almost surely, 2^{221534455610142} is an apocalyptic number.

221534455610142 is an abundant number, since it is smaller than the sum of its proper divisors (258456864878538).

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

221534455610142 is a wasteful number, since it uses less digits than its factorization.

221534455610142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12307469756127 (or 12307469756124 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 45.

The spelling of 221534455610142 in words is "two hundred twenty-one trillion, five hundred thirty-four billion, four hundred fifty-five million, six hundred ten thousand, one hundred forty-two".