212021230331 has 2 divisors, whose sum is σ = 212021230332. Its totient is φ = 212021230330.

The previous prime is 212021230319. The next prime is 212021230339. The reversal of 212021230331 is 133032120212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212021230331 - 2³⁴ = 194841361147 is a prime.

It is a super-2 number, since 2×212021230331² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (212021230339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106010615165 + 106010615166.

It is an arithmetic number, because the mean of its divisors is an integer number (106010615166).

Almost surely, 2^212021230331 is an apocalyptic number.

212021230331 is a deficient number, since it is larger than the sum of its proper divisors (1).

212021230331 is an equidigital number, since it uses as much as digits as its factorization.

212021230331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 212021230331 its reverse (133032120212), we get a palindrome (345053350543).

The spelling of 212021230331 in words is "two hundred twelve billion, twenty-one million, two hundred thirty thousand, three hundred thirty-one".