12666022 has 8 divisors (see below), whose sum is σ = 19109376. Its totient is φ = 6296232.

The previous prime is 12666019. The next prime is 12666029. The reversal of 12666022 is 22066621.

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

It is a super-2 number, since 2×12666022² = 320856226608968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12666029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17958 + ... + 18649.

It is an arithmetic number, because the mean of its divisors is an integer number (2388672).

Almost surely, 2^12666022 is an apocalyptic number.

12666022 is a deficient number, since it is larger than the sum of its proper divisors (6443354).

12666022 is a wasteful number, since it uses less digits than its factorization.

12666022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36782.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 12666022 is about 3558.9355150101. The cubic root of 12666022 is about 233.1024005434.

The spelling of 12666022 in words is "twelve million, six hundred sixty-six thousand, twenty-two".