131121110051 has 4 divisors (see below), whose sum is σ = 131548214952. Its totient is φ = 130694005152.

The previous prime is 131121110039. The next prime is 131121110059. The reversal of 131121110051 is 150011121131.

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 131121110051 - 2³⁴ = 113941240867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131121110059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213551990 + ... + 213552603.

It is an arithmetic number, because the mean of its divisors is an integer number (32887053738).

Almost surely, 2^131121110051 is an apocalyptic number.

131121110051 is a deficient number, since it is larger than the sum of its proper divisors (427104901).

131121110051 is an equidigital number, since it uses as much as digits as its factorization.

131121110051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427104900.

The product of its (nonzero) digits is 30, while the sum is 17.

Adding to 131121110051 its reverse (150011121131), we get a palindrome (281132231182).

The spelling of 131121110051 in words is "one hundred thirty-one billion, one hundred twenty-one million, one hundred ten thousand, fifty-one".