212930099 has 4 divisors (see below), whose sum is σ = 212991480. Its totient is φ = 212868720.

The previous prime is 212930071. The next prime is 212930101. The reversal of 212930099 is 990039212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212930099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212930009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25154 + ... + 32535.

It is an arithmetic number, because the mean of its divisors is an integer number (53247870).

Almost surely, 2^212930099 is an apocalyptic number.

212930099 is a deficient number, since it is larger than the sum of its proper divisors (61381).

212930099 is an equidigital number, since it uses as much as digits as its factorization.

212930099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61380.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 212930099 is about 14592.1245540189. The cubic root of 212930099 is about 597.1439253754.

The spelling of 212930099 in words is "two hundred twelve million, nine hundred thirty thousand, ninety-nine".