212283009 has 12 divisors (see below), whose sum is σ = 316522752. Its totient is φ = 136956600.

The previous prime is 212282981. The next prime is 212283037. The reversal of 212283009 is 900382212.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (212282981) and next prime (212283037).

It is not a de Polignac number, because 212283009 - 2⁸ = 212282753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212283079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 380157 + ... + 380714.

It is an arithmetic number, because the mean of its divisors is an integer number (26376896).

Almost surely, 2^212283009 is an apocalyptic number.

It is an amenable number.

212283009 is a deficient number, since it is larger than the sum of its proper divisors (104239743).

212283009 is a wasteful number, since it uses less digits than its factorization.

212283009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760908 (or 760905 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 212283009 is about 14569.9351062385. The cubic root of 212283009 is about 596.5384090533.

The spelling of 212283009 in words is "two hundred twelve million, two hundred eighty-three thousand, nine".