11012121199 has 2 divisors, whose sum is σ = 11012121200. Its totient is φ = 11012121198.

The previous prime is 11012121191. The next prime is 11012121221. The reversal of 11012121199 is 99112121011.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11012121199 - 2³ = 11012121191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11012121191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5506060599 + 5506060600.

It is an arithmetic number, because the mean of its divisors is an integer number (5506060600).

Almost surely, 2^11012121199 is an apocalyptic number.

11012121199 is a deficient number, since it is larger than the sum of its proper divisors (1).

11012121199 is an equidigital number, since it uses as much as digits as its factorization.

11012121199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 28.

The spelling of 11012121199 in words is "eleven billion, twelve million, one hundred twenty-one thousand, one hundred ninety-nine".