11111212319 has 2 divisors, whose sum is σ = 11111212320. Its totient is φ = 11111212318.

The previous prime is 11111212289. The next prime is 11111212363. The reversal of 11111212319 is 91321211111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11111212319 - 2¹² = 11111208223 is a prime.

It is a super-2 number, since 2×11111212319² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11111212294 and 11111212303.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11111212919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555606159 + 5555606160.

It is an arithmetic number, because the mean of its divisors is an integer number (5555606160).

Almost surely, 2^11111212319 is an apocalyptic number.

11111212319 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111212319 is an equidigital number, since it uses as much as digits as its factorization.

11111212319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108, while the sum is 23.

The spelling of 11111212319 in words is "eleven billion, one hundred eleven million, two hundred twelve thousand, three hundred nineteen".