11212099979 has 2 divisors, whose sum is σ = 11212099980. Its totient is φ = 11212099978.

The previous prime is 11212099909. The next prime is 11212100023. The reversal of 11212099979 is 97999021211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11212099979 - 2¹² = 11212095883 is a prime.

It is a super-2 number, since 2×11212099979² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11212099909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5606049989 + 5606049990.

It is an arithmetic number, because the mean of its divisors is an integer number (5606049990).

Almost surely, 2^11212099979 is an apocalyptic number.

11212099979 is a deficient number, since it is larger than the sum of its proper divisors (1).

11212099979 is an equidigital number, since it uses as much as digits as its factorization.

11212099979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 183708, while the sum is 50.

The spelling of 11212099979 in words is "eleven billion, two hundred twelve million, ninety-nine thousand, nine hundred seventy-nine".