20212312131311 has 2 divisors, whose sum is σ = 20212312131312. Its totient is φ = 20212312131310.

The previous prime is 20212312131251. The next prime is 20212312131317. The reversal of 20212312131311 is 11313121321202.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20212312131311 - 2⁶ = 20212312131247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20212312131317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106156065655 + 10106156065656.

It is an arithmetic number, because the mean of its divisors is an integer number (10106156065656).

Almost surely, 2^{20212312131311} is an apocalyptic number.

20212312131311 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212312131311 is an equidigital number, since it uses as much as digits as its factorization.

20212312131311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 20212312131311 its reverse (11313121321202), we get a palindrome (31525433452513).

The spelling of 20212312131311 in words is "twenty trillion, two hundred twelve billion, three hundred twelve million, one hundred thirty-one thousand, three hundred eleven".