213222395 has 4 divisors (see below), whose sum is σ = 255866880. Its totient is φ = 170577912.

The previous prime is 213222377. The next prime is 213222403. The reversal of 213222395 is 593222312.

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-213222395 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21322235 + ... + 21322244.

It is an arithmetic number, because the mean of its divisors is an integer number (63966720).

Almost surely, 2^213222395 is an apocalyptic number.

213222395 is a deficient number, since it is larger than the sum of its proper divisors (42644485).

213222395 is an equidigital number, since it uses as much as digits as its factorization.

213222395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42644484.

The product of its digits is 6480, while the sum is 29.

The square root of 213222395 is about 14602.1366587222. The cubic root of 213222395 is about 597.4170400041.

The spelling of 213222395 in words is "two hundred thirteen million, two hundred twenty-two thousand, three hundred ninety-five".