213394211 has 2 divisors, whose sum is σ = 213394212. Its totient is φ = 213394210.

The previous prime is 213394201. The next prime is 213394219. The reversal of 213394211 is 112493312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213394211 - 2¹⁸ = 213132067 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (213394219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106697105 + 106697106.

It is an arithmetic number, because the mean of its divisors is an integer number (106697106).

Almost surely, 2^213394211 is an apocalyptic number.

213394211 is a deficient number, since it is larger than the sum of its proper divisors (1).

213394211 is an equidigital number, since it uses as much as digits as its factorization.

213394211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 26.

The square root of 213394211 is about 14608.0187226057. The cubic root of 213394211 is about 597.5774644405.

The spelling of 213394211 in words is "two hundred thirteen million, three hundred ninety-four thousand, two hundred eleven".