2121022121311 has 2 divisors, whose sum is σ = 2121022121312. Its totient is φ = 2121022121310.

The previous prime is 2121022121297. The next prime is 2121022121359. The reversal of 2121022121311 is 1131212201212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2121022121311 - 2²³ = 2121013732703 is a prime.

It is a super-2 number, since 2×2121022121311² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121022121111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060511060655 + 1060511060656.

It is an arithmetic number, because the mean of its divisors is an integer number (1060511060656).

Almost surely, 2^{2121022121311} is an apocalyptic number.

2121022121311 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121022121311 is an equidigital number, since it uses as much as digits as its factorization.

2121022121311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 2121022121311 its reverse (1131212201212), we get a palindrome (3252234322523).

The spelling of 2121022121311 in words is "two trillion, one hundred twenty-one billion, twenty-two million, one hundred twenty-one thousand, three hundred eleven".