12210290 has 8 divisors (see below), whose sum is σ = 21978540. Its totient is φ = 4884112.

The previous prime is 12210287. The next prime is 12210307. The reversal of 12210290 is 9201221.

It can be written as a sum of positive squares in 2 ways, for example, as 11002489 + 1207801 = 3317^2 + 1099^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 610505 + ... + 610524.

Almost surely, 2^12210290 is an apocalyptic number.

12210290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12210290 is a deficient number, since it is larger than the sum of its proper divisors (9768250).

12210290 is a wasteful number, since it uses less digits than its factorization.

12210290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1221036.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 12210290 is about 3494.3225380608. The cubic root of 12210290 is about 230.2724559516.

The spelling of 12210290 in words is "twelve million, two hundred ten thousand, two hundred ninety".