221431357424316 has 24 divisors (see below), whose sum is σ = 556417257117904. Its totient is φ = 68132725361280.

The previous prime is 221431357424273. The next prime is 221431357424341. The reversal of 221431357424316 is 613424753134122.

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, 709715889025 + ... + 709715889336.

Almost surely, 2^{221431357424316} is an apocalyptic number.

221431357424316 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

221431357424316 is an abundant number, since it is smaller than the sum of its proper divisors (334985899693588).

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

221431357424316 is a wasteful number, since it uses less digits than its factorization.

221431357424316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1419431778381 (or 1419431778379 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 48.

The spelling of 221431357424316 in words is "two hundred twenty-one trillion, four hundred thirty-one billion, three hundred fifty-seven million, four hundred twenty-four thousand, three hundred sixteen".