20001201209959 has 2 divisors, whose sum is σ = 20001201209960. Its totient is φ = 20001201209958.

The previous prime is 20001201209911. The next prime is 20001201210037. The reversal of 20001201209959 is 95990210210002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20001201209959 - 2⁷ = 20001201209831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20001201209909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000600604979 + 10000600604980.

It is an arithmetic number, because the mean of its divisors is an integer number (10000600604980).

Almost surely, 2^{20001201209959} is an apocalyptic number.

20001201209959 is a deficient number, since it is larger than the sum of its proper divisors (1).

20001201209959 is an equidigital number, since it uses as much as digits as its factorization.

20001201209959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29160, while the sum is 40.

The spelling of 20001201209959 in words is "twenty trillion, one billion, two hundred one million, two hundred nine thousand, nine hundred fifty-nine".