2121002332331 has 16 divisors (see below), whose sum is σ = 2150660568960. Its totient is φ = 2091416371200.

The previous prime is 2121002332321. The next prime is 2121002332349. The reversal of 2121002332331 is 1332332001212.

It is a cyclic number.

It is not a de Polignac number, because 2121002332331 - 2²⁶ = 2120935223467 is a prime.

It is a super-2 number, since 2×2121002332331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2121002332297 and 2121002332306.

It is not an unprimeable number, because it can be changed into a prime (2121002332321) 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, 220909931 + ... + 220919531.

It is an arithmetic number, because the mean of its divisors is an integer number (134416285560).

Almost surely, 2^{2121002332331} is an apocalyptic number.

2121002332331 is a deficient number, since it is larger than the sum of its proper divisors (29658236629).

2121002332331 is a wasteful number, since it uses less digits than its factorization.

2121002332331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13046.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 2121002332331 its reverse (1332332001212), we get a palindrome (3453334333543).

The spelling of 2121002332331 in words is "two trillion, one hundred twenty-one billion, two million, three hundred thirty-two thousand, three hundred thirty-one".