202120122011999 has 2 divisors, whose sum is σ = 202120122012000. Its totient is φ = 202120122011998.

The previous prime is 202120122011993. The next prime is 202120122012019. The reversal of 202120122011999 is 999110221021202.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202120122011999 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202120122011993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101060061005999 + 101060061006000.

It is an arithmetic number, because the mean of its divisors is an integer number (101060061006000).

Almost surely, 2^{202120122011999} is an apocalyptic number.

202120122011999 is a deficient number, since it is larger than the sum of its proper divisors (1).

202120122011999 is an equidigital number, since it uses as much as digits as its factorization.

202120122011999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 41.

The spelling of 202120122011999 in words is "two hundred two trillion, one hundred twenty billion, one hundred twenty-two million, eleven thousand, nine hundred ninety-nine".