120013212031 has 4 divisors (see below), whose sum is σ = 122277612312. Its totient is φ = 117748811752.

The previous prime is 120013212023. The next prime is 120013212041. The reversal of 120013212031 is 130212310021.

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 120013212031 - 2³ = 120013212023 is a prime.

It is a super-2 number, since 2×120013212031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120013211996 and 120013212014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120013212041) 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, 1132200061 + ... + 1132200166.

It is an arithmetic number, because the mean of its divisors is an integer number (30569403078).

Almost surely, 2^120013212031 is an apocalyptic number.

120013212031 is a deficient number, since it is larger than the sum of its proper divisors (2264400281).

120013212031 is an equidigital number, since it uses as much as digits as its factorization.

120013212031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2264400280.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 120013212031 its reverse (130212310021), we get a palindrome (250225522052).

The spelling of 120013212031 in words is "one hundred twenty billion, thirteen million, two hundred twelve thousand, thirty-one".