2120230121 has 4 divisors (see below), whose sum is σ = 2231821200. Its totient is φ = 2008639044.

The previous prime is 2120230117. The next prime is 2120230139. The reversal of 2120230121 is 1210320212.

It is a happy number.

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 not a de Polignac number, because 2120230121 - 2² = 2120230117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2120230096 and 2120230105.

It is not an unprimeable number, because it can be changed into a prime (2120236121) 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, 55795511 + ... + 55795548.

It is an arithmetic number, because the mean of its divisors is an integer number (557955300).

Almost surely, 2^2120230121 is an apocalyptic number.

It is an amenable number.

2120230121 is a deficient number, since it is larger than the sum of its proper divisors (111591079).

2120230121 is a wasteful number, since it uses less digits than its factorization.

2120230121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111591078.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2120230121 is about 46045.9566194471. The cubic root of 2120230121 is about 1284.6781372763.

Adding to 2120230121 its reverse (1210320212), we get a palindrome (3330550333).

Subtracting from 2120230121 its reverse (1210320212), we obtain a palindrome (909909909).

The spelling of 2120230121 in words is "two billion, one hundred twenty million, two hundred thirty thousand, one hundred twenty-one".