20201212099699 has 2 divisors, whose sum is σ = 20201212099700. Its totient is φ = 20201212099698.

The previous prime is 20201212099639. The next prime is 20201212099703. The reversal of 20201212099699 is 99699021210202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20201212099699 - 2⁷ = 20201212099571 is a prime.

It is not a weakly prime, because it can be changed into another prime (20201212099619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100606049849 + 10100606049850.

It is an arithmetic number, because the mean of its divisors is an integer number (10100606049850).

Almost surely, 2^{20201212099699} is an apocalyptic number.

20201212099699 is a deficient number, since it is larger than the sum of its proper divisors (1).

20201212099699 is an equidigital number, since it uses as much as digits as its factorization.

20201212099699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 629856, while the sum is 52.

The spelling of 20201212099699 in words is "twenty trillion, two hundred one billion, two hundred twelve million, ninety-nine thousand, six hundred ninety-nine".