221432145347575 has 12 divisors (see below), whose sum is σ = 280961345354008. Its totient is φ = 173026048456800.

The previous prime is 221432145347551. The next prime is 221432145347657. The reversal of 221432145347575 is 575743541234122.

221432145347575 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-221432145347575 is a prime.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 102991694436 + ... + 102991696585.

Almost surely, 2^{221432145347575} is an apocalyptic number.

221432145347575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

221432145347575 is a deficient number, since it is larger than the sum of its proper divisors (59529200006433).

221432145347575 is a wasteful number, since it uses less digits than its factorization.

221432145347575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205983391074 (or 205983391069 counting only the distinct ones).

The product of its digits is 28224000, while the sum is 55.

The spelling of 221432145347575 in words is "two hundred twenty-one trillion, four hundred thirty-two billion, one hundred forty-five million, three hundred forty-seven thousand, five hundred seventy-five".