22200066 has 24 divisors (see below), whose sum is σ = 54971904. Its totient is φ = 6342840.

The previous prime is 22200047. The next prime is 22200077. The reversal of 22200066 is 66000222.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a zygodrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 87970 + ... + 88221.

It is an arithmetic number, because the mean of its divisors is an integer number (2290496).

Almost surely, 2^22200066 is an apocalyptic number.

22200066 is an abundant number, since it is smaller than the sum of its proper divisors (32771838).

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

22200066 is a wasteful number, since it uses less digits than its factorization.

22200066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176206 (or 176203 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 22200066 is about 4711.6945996106. The cubic root of 22200066 is about 281.0507542893.

Adding to 22200066 its reverse (66000222), we get a palindrome (88200288).

The spelling of 22200066 in words is "twenty-two million, two hundred thousand, sixty-six".