21210098112967 has 2 divisors, whose sum is σ = 21210098112968. Its totient is φ = 21210098112966.

The previous prime is 21210098112953. The next prime is 21210098113007. The reversal of 21210098112967 is 76921189001212.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21210098112967 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21210098112967.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21210098112667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10605049056483 + 10605049056484.

It is an arithmetic number, because the mean of its divisors is an integer number (10605049056484).

Almost surely, 2^{21210098112967} is an apocalyptic number.

21210098112967 is a deficient number, since it is larger than the sum of its proper divisors (1).

21210098112967 is an equidigital number, since it uses as much as digits as its factorization.

21210098112967 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 49.

The spelling of 21210098112967 in words is "twenty-one trillion, two hundred ten billion, ninety-eight million, one hundred twelve thousand, nine hundred sixty-seven".