2153112231621 has 8 divisors (see below), whose sum is σ = 3091648332640. Its totient is φ = 1324992142512.

The previous prime is 2153112231593. The next prime is 2153112231659. The reversal of 2153112231621 is 1261322113512.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2153112231621 - 2²² = 2153108037317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2153112235621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27604002931 + ... + 27604003008.

It is an arithmetic number, because the mean of its divisors is an integer number (386456041580).

Almost surely, 2^{2153112231621} is an apocalyptic number.

It is an amenable number.

2153112231621 is a deficient number, since it is larger than the sum of its proper divisors (938536101019).

2153112231621 is a wasteful number, since it uses less digits than its factorization.

2153112231621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55208005955.

The product of its digits is 4320, while the sum is 30.

The spelling of 2153112231621 in words is "two trillion, one hundred fifty-three billion, one hundred twelve million, two hundred thirty-one thousand, six hundred twenty-one".