32212009 has 2 divisors, whose sum is σ = 32212010. Its totient is φ = 32212008.

The previous prime is 32212001. The next prime is 32212043. The reversal of 32212009 is 90021223.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29160000 + 3052009 = 5400^2 + 1747^2 .

It is an emirp because it is prime and its reverse (90021223) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 32212009 - 2³ = 32212001 is a prime.

It is a super-2 number, since 2×32212009² = 2075227047632162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (32212001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16106004 + 16106005.

It is an arithmetic number, because the mean of its divisors is an integer number (16106005).

Almost surely, 2^32212009 is an apocalyptic number.

It is an amenable number.

32212009 is a deficient number, since it is larger than the sum of its proper divisors (1).

32212009 is an equidigital number, since it uses as much as digits as its factorization.

32212009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 32212009 is about 5675.5624390892. The cubic root of 32212009 is about 318.1797995642.

The spelling of 32212009 in words is "thirty-two million, two hundred twelve thousand, nine".