213223022191 has 2 divisors, whose sum is σ = 213223022192. Its totient is φ = 213223022190.

The previous prime is 213223022179. The next prime is 213223022267. The reversal of 213223022191 is 191220322312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213223022191 - 2¹⁹ = 213222497903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213223022891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106611511095 + 106611511096.

It is an arithmetic number, because the mean of its divisors is an integer number (106611511096).

Almost surely, 2^213223022191 is an apocalyptic number.

213223022191 is a deficient number, since it is larger than the sum of its proper divisors (1).

213223022191 is an equidigital number, since it uses as much as digits as its factorization.

213223022191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The spelling of 213223022191 in words is "two hundred thirteen billion, two hundred twenty-three million, twenty-two thousand, one hundred ninety-one".