120102210031021 has 4 divisors (see below), whose sum is σ = 121549224609792. Its totient is φ = 118655195452252.

The previous prime is 120102210031003. The next prime is 120102210031091. The reversal of 120102210031021 is 120130012201021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120102210031021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120102210030986 and 120102210031004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120102210031091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 723507289261 + ... + 723507289426.

It is an arithmetic number, because the mean of its divisors is an integer number (30387306152448).

Almost surely, 2^{120102210031021} is an apocalyptic number.

It is an amenable number.

120102210031021 is a deficient number, since it is larger than the sum of its proper divisors (1447014578771).

120102210031021 is an equidigital number, since it uses as much as digits as its factorization.

120102210031021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1447014578770.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 120102210031021 its reverse (120130012201021), we get a palindrome (240232222232042).

The spelling of 120102210031021 in words is "one hundred twenty trillion, one hundred two billion, two hundred ten million, thirty-one thousand, twenty-one".