11311222999 has 2 divisors, whose sum is σ = 11311223000. Its totient is φ = 11311222998.

The previous prime is 11311222981. The next prime is 11311223041. The reversal of 11311222999 is 99922211311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11311222999 - 2¹¹ = 11311220951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11311222939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5655611499 + 5655611500.

It is an arithmetic number, because the mean of its divisors is an integer number (5655611500).

Almost surely, 2^11311222999 is an apocalyptic number.

11311222999 is a deficient number, since it is larger than the sum of its proper divisors (1).

11311222999 is an equidigital number, since it uses as much as digits as its factorization.

11311222999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17496, while the sum is 40.

The spelling of 11311222999 in words is "eleven billion, three hundred eleven million, two hundred twenty-two thousand, nine hundred ninety-nine".