121013302031 has 4 divisors (see below), whose sum is σ = 121020754752. Its totient is φ = 121005849312.

The previous prime is 121013302013. The next prime is 121013302051. The reversal of 121013302031 is 130203310121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121013302031 is a prime.

It is a super-2 number, since 2×121013302031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121013302051) 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, 3701951 + ... + 3734496.

It is an arithmetic number, because the mean of its divisors is an integer number (30255188688).

Almost surely, 2^121013302031 is an apocalyptic number.

121013302031 is a deficient number, since it is larger than the sum of its proper divisors (7452721).

121013302031 is an equidigital number, since it uses as much as digits as its factorization.

121013302031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7452720.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 121013302031 its reverse (130203310121), we get a palindrome (251216612152).

The spelling of 121013302031 in words is "one hundred twenty-one billion, thirteen million, three hundred two thousand, thirty-one".