120121013431 has 16 divisors (see below), whose sum is σ = 125265254400. Its totient is φ = 115060701600.

The previous prime is 120121013399. The next prime is 120121013437. The reversal of 120121013431 is 134310121021.

It is a cyclic number.

It is not a de Polignac number, because 120121013431 - 2⁵ = 120121013399 is a prime.

It is a super-2 number, since 2×120121013431² (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 = 120121013399 and 120121013408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120121013437) 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, 1541710 + ... + 1617748.

It is an arithmetic number, because the mean of its divisors is an integer number (7829078400).

Almost surely, 2^120121013431 is an apocalyptic number.

120121013431 is a deficient number, since it is larger than the sum of its proper divisors (5144240969).

120121013431 is a wasteful number, since it uses less digits than its factorization.

120121013431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76590.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 120121013431 its reverse (134310121021), we get a palindrome (254431134452).

The spelling of 120121013431 in words is "one hundred twenty billion, one hundred twenty-one million, thirteen thousand, four hundred thirty-one".