2120331300121 has 4 divisors (see below), whose sum is σ = 2120408004132. Its totient is φ = 2120254596112.

The previous prime is 2120331300107. The next prime is 2120331300137. The reversal of 2120331300121 is 1210031330212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 57761392896 + 2062569907225 = 240336^2 + 1436165^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120331300121 - 2⁵ = 2120331300089 is a prime.

It is a super-2 number, since 2×2120331300121² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120331310121) 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, 38310526 + ... + 38365831.

It is an arithmetic number, because the mean of its divisors is an integer number (530102001033).

Almost surely, 2^{2120331300121} is an apocalyptic number.

It is an amenable number.

2120331300121 is a deficient number, since it is larger than the sum of its proper divisors (76704011).

2120331300121 is an equidigital number, since it uses as much as digits as its factorization.

2120331300121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76704010.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 2120331300121 its reverse (1210031330212), we get a palindrome (3330362630333).

The spelling of 2120331300121 in words is "two trillion, one hundred twenty billion, three hundred thirty-one million, three hundred thousand, one hundred twenty-one".