120331100121 has 32 divisors (see below), whose sum is σ = 169718685696. Its totient is φ = 75711696000.

The previous prime is 120331100107. The next prime is 120331100129. The reversal of 120331100121 is 121001133021.

It is a happy number.

It is not a de Polignac number, because 120331100121 - 2³⁵ = 85971361753 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120331100121.

It is not an unprimeable number, because it can be changed into a prime (120331100129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16739290 + ... + 16746476.

It is an arithmetic number, because the mean of its divisors is an integer number (5303708928).

Almost surely, 2^120331100121 is an apocalyptic number.

It is an amenable number.

120331100121 is a deficient number, since it is larger than the sum of its proper divisors (49387585575).

120331100121 is a wasteful number, since it uses less digits than its factorization.

120331100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11653.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 120331100121 its reverse (121001133021), we get a palindrome (241332233142).

The spelling of 120331100121 in words is "one hundred twenty billion, three hundred thirty-one million, one hundred thousand, one hundred twenty-one".