2121030113131 has 16 divisors (see below), whose sum is σ = 2364056064000. Its totient is φ = 1891149406848.

The previous prime is 2121030113129. The next prime is 2121030113231. The reversal of 2121030113131 is 1313110301212.

It is a cyclic number.

It is not a de Polignac number, because 2121030113131 - 2¹ = 2121030113129 is a prime.

It is a super-2 number, since 2×2121030113131² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2121030113099 and 2121030113108.

It is not an unprimeable number, because it can be changed into a prime (2121030113101) 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, 21138426 + ... + 21238528.

It is an arithmetic number, because the mean of its divisors is an integer number (147753504000).

Almost surely, 2^{2121030113131} is an apocalyptic number.

2121030113131 is a deficient number, since it is larger than the sum of its proper divisors (243025950869).

2121030113131 is a wasteful number, since it uses less digits than its factorization.

2121030113131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165738.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 2121030113131 its reverse (1313110301212), we get a palindrome (3434140414343).

The spelling of 2121030113131 in words is "two trillion, one hundred twenty-one billion, thirty million, one hundred thirteen thousand, one hundred thirty-one".