212403344369 has 2 divisors, whose sum is σ = 212403344370. Its totient is φ = 212403344368.

The previous prime is 212403344339. The next prime is 212403344381. The reversal of 212403344369 is 963443304212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 168013911025 + 44389433344 = 409895^2 + 210688^2 .

It is a cyclic number.

It is not a de Polignac number, because 212403344369 - 2³⁶ = 143683867633 is a prime.

It is a super-2 number, since 2×212403344369² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (212403344339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106201672184 + 106201672185.

It is an arithmetic number, because the mean of its divisors is an integer number (106201672185).

Almost surely, 2^212403344369 is an apocalyptic number.

It is an amenable number.

212403344369 is a deficient number, since it is larger than the sum of its proper divisors (1).

212403344369 is an equidigital number, since it uses as much as digits as its factorization.

212403344369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 41.

The spelling of 212403344369 in words is "two hundred twelve billion, four hundred three million, three hundred forty-four thousand, three hundred sixty-nine".