2121011313331 has 2 divisors, whose sum is σ = 2121011313332. Its totient is φ = 2121011313330.

The previous prime is 2121011313319. The next prime is 2121011313419. The reversal of 2121011313331 is 1333131101212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2121011313331 - 2⁷ = 2121011313203 is a prime.

It is a super-2 number, since 2×2121011313331² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2121011313131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060505656665 + 1060505656666.

It is an arithmetic number, because the mean of its divisors is an integer number (1060505656666).

Almost surely, 2^{2121011313331} is an apocalyptic number.

2121011313331 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121011313331 is an equidigital number, since it uses as much as digits as its factorization.

2121011313331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 2121011313331 its reverse (1333131101212), we get a palindrome (3454142414543).

It can be divided in two parts, 2121011 and 313331, that added together give a palindrome (2434342).

The spelling of 2121011313331 in words is "two trillion, one hundred twenty-one billion, eleven million, three hundred thirteen thousand, three hundred thirty-one".