121023231131031 has 16 divisors (see below), whose sum is σ = 173196823928544. Its totient is φ = 74895923856384.

The previous prime is 121023231131017. The next prime is 121023231131071. The reversal of 121023231131031 is 130131132320121.

It is not a de Polignac number, because 121023231131031 - 2⁹ = 121023231130519 is a prime.

It is a super-2 number, since 2×121023231131031² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121023231130992 and 121023231131010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121023231131071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16253451976 + ... + 16253459421.

It is an arithmetic number, because the mean of its divisors is an integer number (10824801495534).

Almost surely, 2^{121023231131031} is an apocalyptic number.

121023231131031 is a deficient number, since it is larger than the sum of its proper divisors (52173592797513).

121023231131031 is a wasteful number, since it uses less digits than its factorization.

121023231131031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32506911490.

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 121023231131031 its reverse (130131132320121), we get a palindrome (251154363451152).

The spelling of 121023231131031 in words is "one hundred twenty-one trillion, twenty-three billion, two hundred thirty-one million, one hundred thirty-one thousand, thirty-one".