212440099 has 2 divisors, whose sum is σ = 212440100. Its totient is φ = 212440098.

The previous prime is 212440073. The next prime is 212440157. The reversal of 212440099 is 990044212.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212440099 - 2¹⁵ = 212407331 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212440099.

It is not a weakly prime, because it can be changed into another prime (212440069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106220049 + 106220050.

It is an arithmetic number, because the mean of its divisors is an integer number (106220050).

Almost surely, 2^212440099 is an apocalyptic number.

212440099 is a deficient number, since it is larger than the sum of its proper divisors (1).

212440099 is an equidigital number, since it uses as much as digits as its factorization.

212440099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 212440099 is about 14575.3250049527. The cubic root of 212440099 is about 596.6855194498.

The spelling of 212440099 in words is "two hundred twelve million, four hundred forty thousand, ninety-nine".