120203233130021 has 16 divisors (see below), whose sum is σ = 131710806624240. Its totient is φ = 109191483448320.

The previous prime is 120203233130011. The next prime is 120203233130059. The reversal of 120203233130021 is 120031332302021.

It can be written as a sum of positive squares in 8 ways, for example, as 1338487024900 + 118864746105121 = 1156930^2 + 10902511^2 .

It is a cyclic number.

It is not a de Polignac number, because 120203233130021 - 2⁶ = 120203233129957 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120203233130011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43125146 + ... + 45827771.

It is an arithmetic number, because the mean of its divisors is an integer number (8231925414015).

Almost surely, 2^{120203233130021} is an apocalyptic number.

It is an amenable number.

120203233130021 is a deficient number, since it is larger than the sum of its proper divisors (11507573494219).

120203233130021 is a wasteful number, since it uses less digits than its factorization.

120203233130021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88955704.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 120203233130021 its reverse (120031332302021), we get a palindrome (240234565432042).

The spelling of 120203233130021 in words is "one hundred twenty trillion, two hundred three billion, two hundred thirty-three million, one hundred thirty thousand, twenty-one".