22111066 has 4 divisors (see below), whose sum is σ = 33166602. Its totient is φ = 11055532.

The previous prime is 22111051. The next prime is 22111069. The reversal of 22111066 is 66011122.

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., 14707225 + 7403841 = 3835^2 + 2721^2 .

It is not an unprimeable number, because it can be changed into a prime (22111069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5527765 + ... + 5527768.

Almost surely, 2^22111066 is an apocalyptic number.

22111066 is a deficient number, since it is larger than the sum of its proper divisors (11055536).

22111066 is a wasteful number, since it uses less digits than its factorization.

22111066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11055535.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 22111066 is about 4702.2405297900. The cubic root of 22111066 is about 280.6746740537.

Adding to 22111066 its reverse (66011122), we get a palindrome (88122188).

The spelling of 22111066 in words is "twenty-two million, one hundred eleven thousand, sixty-six".