210001312999 has 2 divisors, whose sum is σ = 210001313000. Its totient is φ = 210001312998.

The previous prime is 210001312991. The next prime is 210001313029. The reversal of 210001312999 is 999213100012.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 210001312999 - 2³ = 210001312991 is a prime.

It is a super-2 number, since 2×210001312999² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210001312991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105000656499 + 105000656500.

It is an arithmetic number, because the mean of its divisors is an integer number (105000656500).

Almost surely, 2^210001312999 is an apocalyptic number.

210001312999 is a deficient number, since it is larger than the sum of its proper divisors (1).

210001312999 is an equidigital number, since it uses as much as digits as its factorization.

210001312999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8748, while the sum is 37.

The spelling of 210001312999 in words is "two hundred ten billion, one million, three hundred twelve thousand, nine hundred ninety-nine".