212321299 has 4 divisors (see below), whose sum is σ = 212357736. Its totient is φ = 212284864.

The previous prime is 212321293. The next prime is 212321309. The reversal of 212321299 is 992123212.

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 212321299 - 2¹³ = 212313107 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 212321299.

It is not an unprimeable number, because it can be changed into a prime (212321293) 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, 7294 + ... + 21859.

It is an arithmetic number, because the mean of its divisors is an integer number (53089434).

Almost surely, 2^212321299 is an apocalyptic number.

212321299 is a deficient number, since it is larger than the sum of its proper divisors (36437).

212321299 is an equidigital number, since it uses as much as digits as its factorization.

212321299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36436.

The product of its digits is 3888, while the sum is 31.

The square root of 212321299 is about 14571.2490542163. The cubic root of 212321299 is about 596.5742732558.

The spelling of 212321299 in words is "two hundred twelve million, three hundred twenty-one thousand, two hundred ninety-nine".