221431354107572 has 24 divisors (see below), whose sum is σ = 442901055273600. Its totient is φ = 94890934533600.

The previous prime is 221431354107563. The next prime is 221431354107617. The reversal of 221431354107572 is 275701453134122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 342055304 + ... + 342702047.

It is an arithmetic number, because the mean of its divisors is an integer number (18454210636400).

Almost surely, 2^{221431354107572} is an apocalyptic number.

It is an amenable number.

221431354107572 is an abundant number, since it is smaller than the sum of its proper divisors (221469701166028).

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

221431354107572 is a wasteful number, since it uses less digits than its factorization.

221431354107572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684768911 (or 684768909 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 47.

The spelling of 221431354107572 in words is "two hundred twenty-one trillion, four hundred thirty-one billion, three hundred fifty-four million, one hundred seven thousand, five hundred seventy-two".