213113211251 has 2 divisors, whose sum is σ = 213113211252. Its totient is φ = 213113211250.

The previous prime is 213113211211. The next prime is 213113211343. The reversal of 213113211251 is 152112311312.

213113211251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213113211251 - 2¹⁴ = 213113194867 is a prime.

It is not a weakly prime, because it can be changed into another prime (213113211211) 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, 106556605625 + 106556605626.

It is an arithmetic number, because the mean of its divisors is an integer number (106556605626).

Almost surely, 2^213113211251 is an apocalyptic number.

213113211251 is a deficient number, since it is larger than the sum of its proper divisors (1).

213113211251 is an equidigital number, since it uses as much as digits as its factorization.

213113211251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 360, while the sum is 23.

Adding to 213113211251 its reverse (152112311312), we get a palindrome (365225522563).

The spelling of 213113211251 in words is "two hundred thirteen billion, one hundred thirteen million, two hundred eleven thousand, two hundred fifty-one".