121301310131 has 4 divisors (see below), whose sum is σ = 123357264600. Its totient is φ = 119245355664.

The previous prime is 121301310107. The next prime is 121301310157. The reversal of 121301310131 is 131013103121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131013103121 = 1231 ⋅106428191.

It is a cyclic number.

It is not a de Polignac number, because 121301310131 - 2²² = 121297115827 is a prime.

It is a super-2 number, since 2×121301310131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121301310191) 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, 1027977146 + ... + 1027977263.

It is an arithmetic number, because the mean of its divisors is an integer number (30839316150).

Almost surely, 2^121301310131 is an apocalyptic number.

121301310131 is a deficient number, since it is larger than the sum of its proper divisors (2055954469).

121301310131 is an equidigital number, since it uses as much as digits as its factorization.

121301310131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2055954468.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 121301310131 its reverse (131013103121), we get a palindrome (252314413252).

The spelling of 121301310131 in words is "one hundred twenty-one billion, three hundred one million, three hundred ten thousand, one hundred thirty-one".