213122297231 has 2 divisors, whose sum is σ = 213122297232. Its totient is φ = 213122297230.

The previous prime is 213122297191. The next prime is 213122297237. The reversal of 213122297231 is 132792221312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213122297231 - 2³⁴ = 195942428047 is a prime.

It is a super-2 number, since 2×213122297231² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213122297191 and 213122297200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213122297237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106561148615 + 106561148616.

It is an arithmetic number, because the mean of its divisors is an integer number (106561148616).

Almost surely, 2^213122297231 is an apocalyptic number.

213122297231 is a deficient number, since it is larger than the sum of its proper divisors (1).

213122297231 is an equidigital number, since it uses as much as digits as its factorization.

213122297231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 35.

The spelling of 213122297231 in words is "two hundred thirteen billion, one hundred twenty-two million, two hundred ninety-seven thousand, two hundred thirty-one".