12111010999 has 2 divisors, whose sum is σ = 12111011000. Its totient is φ = 12111010998.

The previous prime is 12111010979. The next prime is 12111011041. The reversal of 12111010999 is 99901011121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12111010999 - 2⁷ = 12111010871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12111010909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6055505499 + 6055505500.

It is an arithmetic number, because the mean of its divisors is an integer number (6055505500).

Almost surely, 2^12111010999 is an apocalyptic number.

12111010999 is a deficient number, since it is larger than the sum of its proper divisors (1).

12111010999 is an equidigital number, since it uses as much as digits as its factorization.

12111010999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1458, while the sum is 34.

The spelling of 12111010999 in words is "twelve billion, one hundred eleven million, ten thousand, nine hundred ninety-nine".