2130111321 has 24 divisors (see below), whose sum is σ = 3078827136. Its totient is φ = 1309389120.

The previous prime is 2130111307. The next prime is 2130111329. The reversal of 2130111321 is 1231110312.

It is a happy number.

It is not a de Polignac number, because 2130111321 - 2⁵ = 2130111289 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2130111321.

It is not an unprimeable number, because it can be changed into a prime (2130111329) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 622411 + ... + 625823.

It is an arithmetic number, because the mean of its divisors is an integer number (128284464).

Almost surely, 2^2130111321 is an apocalyptic number.

It is an amenable number.

2130111321 is a deficient number, since it is larger than the sum of its proper divisors (948715815).

2130111321 is a wasteful number, since it uses less digits than its factorization.

2130111321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4673 (or 4660 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 2130111321 is about 46153.1290488521. The cubic root of 2130111321 is about 1286.6707656973.

Adding to 2130111321 its reverse (1231110312), we get a palindrome (3361221633).

The spelling of 2130111321 in words is "two billion, one hundred thirty million, one hundred eleven thousand, three hundred twenty-one".