212013232231 has 2 divisors, whose sum is σ = 212013232232. Its totient is φ = 212013232230.

The previous prime is 212013232181. The next prime is 212013232247. The reversal of 212013232231 is 132232310212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212013232231 - 2¹³ = 212013224039 is a prime.

It is a super-2 number, since 2×212013232231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212013232631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106006616115 + 106006616116.

It is an arithmetic number, because the mean of its divisors is an integer number (106006616116).

Almost surely, 2^212013232231 is an apocalyptic number.

212013232231 is a deficient number, since it is larger than the sum of its proper divisors (1).

212013232231 is an equidigital number, since it uses as much as digits as its factorization.

212013232231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 212013232231 its reverse (132232310212), we get a palindrome (344245542443).

The spelling of 212013232231 in words is "two hundred twelve billion, thirteen million, two hundred thirty-two thousand, two hundred thirty-one".