120121203131 has 4 divisors (see below), whose sum is σ = 120407889000. Its totient is φ = 119834517264.

The previous prime is 120121203067. The next prime is 120121203133. The reversal of 120121203131 is 131302121021.

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 120121203131 - 2⁶ = 120121203067 is a prime.

It is a super-2 number, since 2×120121203131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120121203133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143342306 + ... + 143343143.

It is an arithmetic number, because the mean of its divisors is an integer number (30101972250).

Almost surely, 2^120121203131 is an apocalyptic number.

120121203131 is a deficient number, since it is larger than the sum of its proper divisors (286685869).

120121203131 is an equidigital number, since it uses as much as digits as its factorization.

120121203131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286685868.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 120121203131 its reverse (131302121021), we get a palindrome (251423324152).

The spelling of 120121203131 in words is "one hundred twenty billion, one hundred twenty-one million, two hundred three thousand, one hundred thirty-one".