2121301131 has 16 divisors (see below), whose sum is σ = 2907995904. Its totient is φ = 1374486624.

The previous prime is 2121301099. The next prime is 2121301141. The reversal of 2121301131 is 1311031212.

It is a happy number.

It is not a de Polignac number, because 2121301131 - 2⁵ = 2121301099 is a prime.

It is a super-2 number, since 2×2121301131² = 8999836976763758322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2121301131.

It is not an unprimeable number, because it can be changed into a prime (2121301141) 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, 97456 + ... + 117218.

It is an arithmetic number, because the mean of its divisors is an integer number (181749744).

Almost surely, 2^2121301131 is an apocalyptic number.

2121301131 is a deficient number, since it is larger than the sum of its proper divisors (786694773).

2121301131 is a wasteful number, since it uses less digits than its factorization.

2121301131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20770.

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

The square root of 2121301131 is about 46057.5849453703. The cubic root of 2121301131 is about 1284.8944143539.

Adding to 2121301131 its reverse (1311031212), we get a palindrome (3432332343).

The spelling of 2121301131 in words is "two billion, one hundred twenty-one million, three hundred one thousand, one hundred thirty-one".