21111100102199 has 2 divisors, whose sum is σ = 21111100102200. Its totient is φ = 21111100102198.

The previous prime is 21111100102177. The next prime is 21111100102241. The reversal of 21111100102199 is 99120100111112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21111100102199 - 2³² = 21106805134903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21111600102199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10555550051099 + 10555550051100.

It is an arithmetic number, because the mean of its divisors is an integer number (10555550051100).

Almost surely, 2^{21111100102199} is an apocalyptic number.

21111100102199 is a deficient number, since it is larger than the sum of its proper divisors (1).

21111100102199 is an equidigital number, since it uses as much as digits as its factorization.

21111100102199 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 29.

The spelling of 21111100102199 in words is "twenty-one trillion, one hundred eleven billion, one hundred million, one hundred two thousand, one hundred ninety-nine".