12021200192909 has 2 divisors, whose sum is σ = 12021200192910. Its totient is φ = 12021200192908.

The previous prime is 12021200192851. The next prime is 12021200192917. The reversal of 12021200192909 is 90929100212021.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10728310668100 + 1292889524809 = 3275410^2 + 1137053^2 .

It is a cyclic number.

It is not a de Polignac number, because 12021200192909 - 2⁸ = 12021200192653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12021200192929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010600096454 + 6010600096455.

It is an arithmetic number, because the mean of its divisors is an integer number (6010600096455).

Almost surely, 2^{12021200192909} is an apocalyptic number.

It is an amenable number.

12021200192909 is a deficient number, since it is larger than the sum of its proper divisors (1).

12021200192909 is an equidigital number, since it uses as much as digits as its factorization.

12021200192909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 38.

The spelling of 12021200192909 in words is "twelve trillion, twenty-one billion, two hundred million, one hundred ninety-two thousand, nine hundred nine".