212110009999 has 2 divisors, whose sum is σ = 212110010000. Its totient is φ = 212110009998.

The previous prime is 212110009961. The next prime is 212110010029. The reversal of 212110009999 is 999900011212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212110009999 - 2⁷ = 212110009871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212110009939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106055004999 + 106055005000.

It is an arithmetic number, because the mean of its divisors is an integer number (106055005000).

Almost surely, 2^212110009999 is an apocalyptic number.

212110009999 is a deficient number, since it is larger than the sum of its proper divisors (1).

212110009999 is an equidigital number, since it uses as much as digits as its factorization.

212110009999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26244, while the sum is 43.

The spelling of 212110009999 in words is "two hundred twelve billion, one hundred ten million, nine thousand, nine hundred ninety-nine".