12210026 has 4 divisors (see below), whose sum is σ = 18315042. Its totient is φ = 6105012.

The previous prime is 12210019. The next prime is 12210041. The reversal of 12210026 is 62001221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 8791225 + 3418801 = 2965^2 + 1849^2 .

It is a plaindrome in base 15.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3052505 + ... + 3052508.

Almost surely, 2^12210026 is an apocalyptic number.

12210026 is a deficient number, since it is larger than the sum of its proper divisors (6105016).

12210026 is an equidigital number, since it uses as much as digits as its factorization.

12210026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6105015.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 12210026 is about 3494.2847622940. The cubic root of 12210026 is about 230.2707963578.

Adding to 12210026 its reverse (62001221), we get a palindrome (74211247).

The spelling of 12210026 in words is "twelve million, two hundred ten thousand, twenty-six".