2130121331 has 16 divisors (see below), whose sum is σ = 2416407840. Its totient is φ = 1861470720.

The previous prime is 2130121297. The next prime is 2130121337. The reversal of 2130121331 is 1331210312.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2130121331 is a prime.

It is a super-2 number, since 2×2130121331² = 9074833769562423122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2130121337) 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, 564491 + ... + 568251.

It is an arithmetic number, because the mean of its divisors is an integer number (151025490).

Almost surely, 2^2130121331 is an apocalyptic number.

2130121331 is a deficient number, since it is larger than the sum of its proper divisors (286286509).

2130121331 is a wasteful number, since it uses less digits than its factorization.

2130121331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6086.

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

The square root of 2130121331 is about 46153.2374920763. The cubic root of 2130121331 is about 1286.6727811716.

Adding to 2130121331 its reverse (1331210312), we get a palindrome (3461331643).

The spelling of 2130121331 in words is "two billion, one hundred thirty million, one hundred twenty-one thousand, three hundred thirty-one".