2123231020121 has 8 divisors (see below), whose sum is σ = 2247898984320. Its totient is φ = 1999854952272.

The previous prime is 2123231020111. The next prime is 2123231020147. The reversal of 2123231020121 is 1210201323212.

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

It is a cyclic number.

It is not a de Polignac number, because 2123231020121 - 2¹⁴ = 2123231003737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2123231020093 and 2123231020102.

It is not an unprimeable number, because it can be changed into a prime (2123231020111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 322970705 + ... + 322977278.

It is an arithmetic number, because the mean of its divisors is an integer number (280987373040).

Almost surely, 2^{2123231020121} is an apocalyptic number.

It is an amenable number.

2123231020121 is a deficient number, since it is larger than the sum of its proper divisors (124667964199).

2123231020121 is a wasteful number, since it uses less digits than its factorization.

2123231020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645948175.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 2123231020121 its reverse (1210201323212), we get a palindrome (3333432343333).

The spelling of 2123231020121 in words is "two trillion, one hundred twenty-three billion, two hundred thirty-one million, twenty thousand, one hundred twenty-one".