120311231021 has 8 divisors (see below), whose sum is σ = 121120414464. Its totient is φ = 119504496960.

The previous prime is 120311231009. The next prime is 120311231057. The reversal of 120311231021 is 120132113021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120311231021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120311231071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 513725 + ... + 710306.

It is an arithmetic number, because the mean of its divisors is an integer number (15140051808).

Almost surely, 2^120311231021 is an apocalyptic number.

It is an amenable number.

120311231021 is a deficient number, since it is larger than the sum of its proper divisors (809183443).

120311231021 is a wasteful number, since it uses less digits than its factorization.

120311231021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1224691.

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

Adding to 120311231021 its reverse (120132113021), we get a palindrome (240443344042).

The spelling of 120311231021 in words is "one hundred twenty billion, three hundred eleven million, two hundred thirty-one thousand, twenty-one".