222241813 has 2 divisors, whose sum is σ = 222241814. Its totient is φ = 222241812.

The previous prime is 222241793. The next prime is 222241829. The reversal of 222241813 is 318142222.

222241813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 216001809 + 6240004 = 14697^2 + 2498^2 .

It is a cyclic number.

It is not a de Polignac number, because 222241813 - 2⁹ = 222241301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222241843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111120906 + 111120907.

It is an arithmetic number, because the mean of its divisors is an integer number (111120907).

Almost surely, 2^222241813 is an apocalyptic number.

It is an amenable number.

222241813 is a deficient number, since it is larger than the sum of its proper divisors (1).

222241813 is an equidigital number, since it uses as much as digits as its factorization.

222241813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1536, while the sum is 25.

The square root of 222241813 is about 14907.7769301798. The cubic root of 222241813 is about 605.7246631572.

The spelling of 222241813 in words is "two hundred twenty-two million, two hundred forty-one thousand, eight hundred thirteen".