11572205213 has 2 divisors, whose sum is σ = 11572205214. Its totient is φ = 11572205212.

The previous prime is 11572205147. The next prime is 11572205237. The reversal of 11572205213 is 31250227511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6654970084 + 4917235129 = 81578^2 + 70123^2 .

It is a cyclic number.

It is not a de Polignac number, because 11572205213 - 2⁸ = 11572204957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11572205413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5786102606 + 5786102607.

It is an arithmetic number, because the mean of its divisors is an integer number (5786102607).

Almost surely, 2^11572205213 is an apocalyptic number.

It is an amenable number.

11572205213 is a deficient number, since it is larger than the sum of its proper divisors (1).

11572205213 is an equidigital number, since it uses as much as digits as its factorization.

11572205213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4200, while the sum is 29.

The spelling of 11572205213 in words is "eleven billion, five hundred seventy-two million, two hundred five thousand, two hundred thirteen".