211230213013 has 2 divisors, whose sum is σ = 211230213014. Its totient is φ = 211230213012.

The previous prime is 211230212981. The next prime is 211230213023. The reversal of 211230213013 is 310312032112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 207796487409 + 3433725604 = 455847^2 + 58598^2 .

It is a cyclic number.

It is not a de Polignac number, because 211230213013 - 2⁵ = 211230212981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211230213023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105615106506 + 105615106507.

It is an arithmetic number, because the mean of its divisors is an integer number (105615106507).

Almost surely, 2^211230213013 is an apocalyptic number.

It is an amenable number.

211230213013 is a deficient number, since it is larger than the sum of its proper divisors (1).

211230213013 is an equidigital number, since it uses as much as digits as its factorization.

211230213013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 211230213013 its reverse (310312032112), we get a palindrome (521542245125).

The spelling of 211230213013 in words is "two hundred eleven billion, two hundred thirty million, two hundred thirteen thousand, thirteen".