131121154121321 has 8 divisors (see below), whose sum is σ = 161379881995584. Its totient is φ = 103744209854160.

The previous prime is 131121154121281. The next prime is 131121154121329. The reversal of 131121154121321 is 123121451121131.

It is a happy number.

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 131121154121321 - 2¹⁴ = 131121154104937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131121154121329) 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, 720445901675 + ... + 720445901856.

It is an arithmetic number, because the mean of its divisors is an integer number (20172485249448).

Almost surely, 2^{131121154121321} is an apocalyptic number.

It is an amenable number.

131121154121321 is a deficient number, since it is larger than the sum of its proper divisors (30258727874263).

131121154121321 is a wasteful number, since it uses less digits than its factorization.

131121154121321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1440891803551.

The product of its digits is 1440, while the sum is 29.

The spelling of 131121154121321 in words is "one hundred thirty-one trillion, one hundred twenty-one billion, one hundred fifty-four million, one hundred twenty-one thousand, three hundred twenty-one".