212232330 has 24 divisors (see below), whose sum is σ = 551804292. Its totient is φ = 56595264.

The previous prime is 212232329. The next prime is 212232331. The reversal of 212232330 is 33232212.

It is a happy number.

212232330 is nontrivially palindromic in base 14.

It is an interprime number because it is at equal distance from previous prime (212232329) and next prime (212232331).

It can be written as a sum of positive squares in 2 ways, for example, as 200760561 + 11471769 = 14169^2 + 3387^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (212232331) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1178979 + ... + 1179158.

Almost surely, 2^212232330 is an apocalyptic number.

212232330 is an abundant number, since it is smaller than the sum of its proper divisors (339571962).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212232330 is a wasteful number, since it uses less digits than its factorization.

212232330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2358150 (or 2358147 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 212232330 is about 14568.1958388814. The cubic root of 212232330 is about 596.4909341026.

Adding to 212232330 its reverse (33232212), we get a palindrome (245464542).

The spelling of 212232330 in words is "two hundred twelve million, two hundred thirty-two thousand, three hundred thirty".