2130313121 has 4 divisors (see below), whose sum is σ = 2130405552. Its totient is φ = 2130220692.

The previous prime is 2130313103. The next prime is 2130313151. The reversal of 2130313121 is 1213130312.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2130313121 - 2⁶ = 2130313057 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2130313121.

It is not an unprimeable number, because it can be changed into a prime (2130313151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19586 + ... + 68148.

It is an arithmetic number, because the mean of its divisors is an integer number (532601388).

Almost surely, 2^2130313121 is an apocalyptic number.

It is an amenable number.

2130313121 is a deficient number, since it is larger than the sum of its proper divisors (92431).

2130313121 is an equidigital number, since it uses as much as digits as its factorization.

2130313121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92430.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 2130313121 is about 46155.3151977104. The cubic root of 2130313121 is about 1286.7113961186.

Adding to 2130313121 its reverse (1213130312), we get a palindrome (3343443433).

The spelling of 2130313121 in words is "two billion, one hundred thirty million, three hundred thirteen thousand, one hundred twenty-one".