10131121113221 has 8 divisors (see below), whose sum is σ = 10537763013888. Its totient is φ = 9729468684000.

The previous prime is 10131121113173. The next prime is 10131121113227. The reversal of 10131121113221 is 12231112113101.

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

It is a cyclic number.

It is not a de Polignac number, because 10131121113221 - 2¹⁸ = 10131120851077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10131121113193 and 10131121113202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10131121113227) 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, 1247363720 + ... + 1247371841.

It is an arithmetic number, because the mean of its divisors is an integer number (1317220376736).

Almost surely, 2^{10131121113221} is an apocalyptic number.

It is an amenable number.

10131121113221 is a deficient number, since it is larger than the sum of its proper divisors (406641900667).

10131121113221 is a wasteful number, since it uses less digits than its factorization.

10131121113221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2494735723.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 10131121113221 its reverse (12231112113101), we get a palindrome (22362233226322).

The spelling of 10131121113221 in words is "ten trillion, one hundred thirty-one billion, one hundred twenty-one million, one hundred thirteen thousand, two hundred twenty-one".