22212066 has 32 divisors (see below), whose sum is σ = 47029248. Its totient is φ = 6979280.

The previous prime is 22212049. The next prime is 22212077. The reversal of 22212066 is 66021222.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8665 + ... + 10931.

It is an arithmetic number, because the mean of its divisors is an integer number (1469664).

Almost surely, 2^22212066 is an apocalyptic number.

22212066 is an abundant number, since it is smaller than the sum of its proper divisors (24817182).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22212066 is a wasteful number, since it uses less digits than its factorization.

22212066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2366.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 22212066 is about 4712.9678547599. The cubic root of 22212066 is about 281.1013847928.

Adding to 22212066 its reverse (66021222), we get a palindrome (88233288).

The spelling of 22212066 in words is "twenty-two million, two hundred twelve thousand, sixty-six".