212223329 has 4 divisors (see below), whose sum is σ = 212308884. Its totient is φ = 212137776.

The previous prime is 212223313. The next prime is 212223343. The reversal of 212223329 is 923322212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 115240225 + 96983104 = 10735^2 + 9848^2 .

It is a cyclic number.

It is not a de Polignac number, because 212223329 - 2⁴ = 212223313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212223298 and 212223307.

It is not an unprimeable number, because it can be changed into a prime (217223329) 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, 38942 + ... + 44055.

It is an arithmetic number, because the mean of its divisors is an integer number (53077221).

Almost surely, 2^212223329 is an apocalyptic number.

It is an amenable number.

212223329 is a deficient number, since it is larger than the sum of its proper divisors (85555).

212223329 is an equidigital number, since it uses as much as digits as its factorization.

212223329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85554.

The product of its digits is 2592, while the sum is 26.

The square root of 212223329 is about 14567.8869092261. The cubic root of 212223329 is about 596.4825013773.

The spelling of 212223329 in words is "two hundred twelve million, two hundred twenty-three thousand, three hundred twenty-nine".