12101201999 has 2 divisors, whose sum is σ = 12101202000. Its totient is φ = 12101201998.

The previous prime is 12101201951. The next prime is 12101202013. The reversal of 12101201999 is 99910210121.

It is a strong prime.

It is an emirp because it is prime and its reverse (99910210121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12101201999 - 2¹² = 12101197903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12101201699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6050600999 + 6050601000.

It is an arithmetic number, because the mean of its divisors is an integer number (6050601000).

Almost surely, 2^12101201999 is an apocalyptic number.

12101201999 is a deficient number, since it is larger than the sum of its proper divisors (1).

12101201999 is an equidigital number, since it uses as much as digits as its factorization.

12101201999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 35.

The spelling of 12101201999 in words is "twelve billion, one hundred one million, two hundred one thousand, nine hundred ninety-nine".