1213212023311 has 2 divisors, whose sum is σ = 1213212023312. Its totient is φ = 1213212023310.

The previous prime is 1213212023281. The next prime is 1213212023321. The reversal of 1213212023311 is 1133202123121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1213212023311 - 2²³ = 1213203634703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1213212023321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606606011655 + 606606011656.

It is an arithmetic number, because the mean of its divisors is an integer number (606606011656).

Almost surely, 2^{1213212023311} is an apocalyptic number.

1213212023311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213212023311 is an equidigital number, since it uses as much as digits as its factorization.

1213212023311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 1213212023311 its reverse (1133202123121), we get a palindrome (2346414146432).

The spelling of 1213212023311 in words is "one trillion, two hundred thirteen billion, two hundred twelve million, twenty-three thousand, three hundred eleven".