212330332309 has 4 divisors (see below), whose sum is σ = 212569713504. Its totient is φ = 212090951116.

The previous prime is 212330332241. The next prime is 212330332339. The reversal of 212330332309 is 903233033212.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212330332309 - 2¹³ = 212330324117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212330332339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119689267 + ... + 119691040.

It is an arithmetic number, because the mean of its divisors is an integer number (53142428376).

Almost surely, 2^212330332309 is an apocalyptic number.

It is an amenable number.

212330332309 is a deficient number, since it is larger than the sum of its proper divisors (239381195).

212330332309 is an equidigital number, since it uses as much as digits as its factorization.

212330332309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239381194.

The product of its (nonzero) digits is 17496, while the sum is 31.

The spelling of 212330332309 in words is "two hundred twelve billion, three hundred thirty million, three hundred thirty-two thousand, three hundred nine".