21100020012199 has 2 divisors, whose sum is σ = 21100020012200. Its totient is φ = 21100020012198.

The previous prime is 21100020012167. The next prime is 21100020012229. The reversal of 21100020012199 is 99121002000112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21100020012199 - 2⁵ = 21100020012167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21100020012899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10550010006099 + 10550010006100.

It is an arithmetic number, because the mean of its divisors is an integer number (10550010006100).

Almost surely, 2^{21100020012199} is an apocalyptic number.

21100020012199 is a deficient number, since it is larger than the sum of its proper divisors (1).

21100020012199 is an equidigital number, since it uses as much as digits as its factorization.

21100020012199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 28.

The spelling of 21100020012199 in words is "twenty-one trillion, one hundred billion, twenty million, twelve thousand, one hundred ninety-nine".