212013218231 has 2 divisors, whose sum is σ = 212013218232. Its totient is φ = 212013218230.

The previous prime is 212013218191. The next prime is 212013218279. The reversal of 212013218231 is 132812310212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212013218231 - 2¹⁴ = 212013201847 is a prime.

It is a super-2 number, since 2×212013218231² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212013218231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212013218281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106006609115 + 106006609116.

It is an arithmetic number, because the mean of its divisors is an integer number (106006609116).

Almost surely, 2^212013218231 is an apocalyptic number.

212013218231 is a deficient number, since it is larger than the sum of its proper divisors (1).

212013218231 is an equidigital number, since it uses as much as digits as its factorization.

212013218231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 26.

Adding to 212013218231 its reverse (132812310212), we get a palindrome (344825528443).

The spelling of 212013218231 in words is "two hundred twelve billion, thirteen million, two hundred eighteen thousand, two hundred thirty-one".