221534452271460 has 48 divisors (see below), whose sum is σ = 630809965800000. Its totient is φ = 58074568278144.

The previous prime is 221534452271443. The next prime is 221534452271467. The reversal of 221534452271460 is 64172254435122.

It is not an unprimeable number, because it can be changed into a prime (221534452271467) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31290173335 + ... + 31290180414.

It is an arithmetic number, because the mean of its divisors is an integer number (13141874287500).

Almost surely, 2^{221534452271460} is an apocalyptic number.

221534452271460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221534452271460 is an abundant number, since it is smaller than the sum of its proper divisors (409275513528540).

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

221534452271460 is a wasteful number, since it uses less digits than its factorization.

221534452271460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62580353820 (or 62580353818 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 48.

The spelling of 221534452271460 in words is "two hundred twenty-one trillion, five hundred thirty-four billion, four hundred fifty-two million, two hundred seventy-one thousand, four hundred sixty".