20102100219967 has 2 divisors, whose sum is σ = 20102100219968. Its totient is φ = 20102100219966.

The previous prime is 20102100219919. The next prime is 20102100220021. The reversal of 20102100219967 is 76991200120102.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20102100219967 - 2³¹ = 20099952736319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20102100219907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10051050109983 + 10051050109984.

It is an arithmetic number, because the mean of its divisors is an integer number (10051050109984).

Almost surely, 2^{20102100219967} is an apocalyptic number.

20102100219967 is a deficient number, since it is larger than the sum of its proper divisors (1).

20102100219967 is an equidigital number, since it uses as much as digits as its factorization.

20102100219967 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 40.

The spelling of 20102100219967 in words is "twenty trillion, one hundred two billion, one hundred million, two hundred nineteen thousand, nine hundred sixty-seven".