212282330 has 16 divisors (see below), whose sum is σ = 411501384. Its totient is φ = 78381120.

The previous prime is 212282267. The next prime is 212282333. The reversal of 212282330 is 33282212.

It can be written as a sum of positive squares in 4 ways, for example, as 155475961 + 56806369 = 12469^2 + 7537^2 .

It is a junction number, because it is equal to n+sod(n) for n = 212282296 and 212282305.

It is not an unprimeable number, because it can be changed into a prime (212282333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 816341 + ... + 816600.

Almost surely, 2^212282330 is an apocalyptic number.

212282330 is a deficient number, since it is larger than the sum of its proper divisors (199219054).

212282330 is a wasteful number, since it uses less digits than its factorization.

212282330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1632961.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 212282330 is about 14569.9118048120. The cubic root of 212282330 is about 596.5377730312.

The spelling of 212282330 in words is "two hundred twelve million, two hundred eighty-two thousand, three hundred thirty".