112721221320621 has 16 divisors (see below), whose sum is σ = 150706637449536. Its totient is φ = 74941791826176.

The previous prime is 112721221320529. The next prime is 112721221320683. The reversal of 112721221320621 is 126023122127211.

It is not a de Polignac number, because 112721221320621 - 2²⁷ = 112721087102893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112721221320121) 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, 15566815 + ... + 21627948.

It is an arithmetic number, because the mean of its divisors is an integer number (9419164840596).

Almost surely, 2^{112721221320621} is an apocalyptic number.

It is an amenable number.

112721221320621 is a deficient number, since it is larger than the sum of its proper divisors (37985416128915).

112721221320621 is a wasteful number, since it uses less digits than its factorization.

112721221320621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37197532.

The product of its (nonzero) digits is 8064, while the sum is 33.

Adding to 112721221320621 its reverse (126023122127211), we get a palindrome (238744343447832).

The spelling of 112721221320621 in words is "one hundred twelve trillion, seven hundred twenty-one billion, two hundred twenty-one million, three hundred twenty thousand, six hundred twenty-one".