120121240131 has 12 divisors (see below), whose sum is σ = 175598922408. Its totient is φ = 79115997024.

The previous prime is 120121240123. The next prime is 120121240153. The reversal of 120121240131 is 131042121021.

120121240131 is a `hidden beast` number, since 1 + 20 + 1 + 212 + 401 + 31 = 666.

It is not a de Polignac number, because 120121240131 - 2³ = 120121240123 is a prime.

It is a super-2 number, since 2×120121240131² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (120121241131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80401690 + ... + 80403183.

It is an arithmetic number, because the mean of its divisors is an integer number (14633243534).

Almost surely, 2^120121240131 is an apocalyptic number.

120121240131 is a deficient number, since it is larger than the sum of its proper divisors (55477682277).

120121240131 is a wasteful number, since it uses less digits than its factorization.

120121240131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160804962 (or 160804959 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 120121240131 its reverse (131042121021), we get a palindrome (251163361152).

The spelling of 120121240131 in words is "one hundred twenty billion, one hundred twenty-one million, two hundred forty thousand, one hundred thirty-one".