12120010031 has 4 divisors (see below), whose sum is σ = 12121283832. Its totient is φ = 12118736232.

The previous prime is 12120010003. The next prime is 12120010033. The reversal of 12120010031 is 13001002121.

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 12120010031 - 2²⁶ = 12052901167 is a prime.

It is a super-3 number, since 3×12120010031³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12120009994 and 12120010021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120010033) 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, 622520 + ... + 641693.

It is an arithmetic number, because the mean of its divisors is an integer number (3030320958).

Almost surely, 2^12120010031 is an apocalyptic number.

12120010031 is a deficient number, since it is larger than the sum of its proper divisors (1273801).

12120010031 is an equidigital number, since it uses as much as digits as its factorization.

12120010031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1273800.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 12120010031 its reverse (13001002121), we get a palindrome (25121012152).

The spelling of 12120010031 in words is "twelve billion, one hundred twenty million, ten thousand, thirty-one".