21212000110199 has 2 divisors, whose sum is σ = 21212000110200. Its totient is φ = 21212000110198.

The previous prime is 21212000110187. The next prime is 21212000110247. The reversal of 21212000110199 is 99101100021212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21212000110199 - 2⁴ = 21212000110183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21212008110199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10606000055099 + 10606000055100.

It is an arithmetic number, because the mean of its divisors is an integer number (10606000055100).

Almost surely, 2^{21212000110199} is an apocalyptic number.

21212000110199 is a deficient number, since it is larger than the sum of its proper divisors (1).

21212000110199 is an equidigital number, since it uses as much as digits as its factorization.

21212000110199 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 29.

The spelling of 21212000110199 in words is "twenty-one trillion, two hundred twelve billion, one hundred ten thousand, one hundred ninety-nine".