121104130231391 has 4 divisors (see below), whose sum is σ = 121268005915800. Its totient is φ = 120940254546984.

The previous prime is 121104130231297. The next prime is 121104130231393. The reversal of 121104130231391 is 193132031401121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121104130231391 - 2¹⁴ = 121104130215007 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 (121104130231393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81937841096 + ... + 81937842573.

It is an arithmetic number, because the mean of its divisors is an integer number (30317001478950).

Almost surely, 2^{121104130231391} is an apocalyptic number.

121104130231391 is a deficient number, since it is larger than the sum of its proper divisors (163875684409).

121104130231391 is an equidigital number, since it uses as much as digits as its factorization.

121104130231391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163875684408.

The product of its (nonzero) digits is 3888, while the sum is 32.

The spelling of 121104130231391 in words is "one hundred twenty-one trillion, one hundred four billion, one hundred thirty million, two hundred thirty-one thousand, three hundred ninety-one".