213222013 has 2 divisors, whose sum is σ = 213222014. Its totient is φ = 213222012.

The previous prime is 213221963. The next prime is 213222049. The reversal of 213222013 is 310222312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 213101604 + 120409 = 14598^2 + 347^2 .

It is a cyclic number.

It is not a de Polignac number, because 213222013 - 2¹³ = 213213821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213220013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106611006 + 106611007.

It is an arithmetic number, because the mean of its divisors is an integer number (106611007).

Almost surely, 2^213222013 is an apocalyptic number.

It is an amenable number.

213222013 is a deficient number, since it is larger than the sum of its proper divisors (1).

213222013 is an equidigital number, since it uses as much as digits as its factorization.

213222013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 213222013 is about 14602.1235784389. The cubic root of 213222013 is about 597.4166832351.

Adding to 213222013 its reverse (310222312), we get a palindrome (523444325).

The spelling of 213222013 in words is "two hundred thirteen million, two hundred twenty-two thousand, thirteen".