212012302231 has 2 divisors, whose sum is σ = 212012302232. Its totient is φ = 212012302230.

The previous prime is 212012302223. The next prime is 212012302267. The reversal of 212012302231 is 132203210212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212012302231 - 2³ = 212012302223 is a prime.

It is a super-2 number, since 2×212012302231² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212012302199 and 212012302208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212012303231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106006151115 + 106006151116.

It is an arithmetic number, because the mean of its divisors is an integer number (106006151116).

Almost surely, 2^212012302231 is an apocalyptic number.

212012302231 is a deficient number, since it is larger than the sum of its proper divisors (1).

212012302231 is an equidigital number, since it uses as much as digits as its factorization.

212012302231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 212012302231 its reverse (132203210212), we get a palindrome (344215512443).

The spelling of 212012302231 in words is "two hundred twelve billion, twelve million, three hundred two thousand, two hundred thirty-one".