212323099 has 4 divisors (see below), whose sum is σ = 212816160. Its totient is φ = 211830040.

The previous prime is 212323093. The next prime is 212323103. The reversal of 212323099 is 990323212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212323099 - 2³ = 212323091 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212323099.

It is not an unprimeable number, because it can be changed into a prime (212323091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245884 + ... + 246745.

It is an arithmetic number, because the mean of its divisors is an integer number (53204040).

Almost surely, 2^212323099 is an apocalyptic number.

212323099 is a deficient number, since it is larger than the sum of its proper divisors (493061).

212323099 is an equidigital number, since it uses as much as digits as its factorization.

212323099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493060.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 212323099 is about 14571.3108195522. The cubic root of 212323099 is about 596.5759591138.

The spelling of 212323099 in words is "two hundred twelve million, three hundred twenty-three thousand, ninety-nine".