20112266 has 4 divisors (see below), whose sum is σ = 30168402. Its totient is φ = 10056132.

The previous prime is 20112251. The next prime is 20112269. The reversal of 20112266 is 66221102.

It is a happy number.

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., 11082241 + 9030025 = 3329^2 + 3005^2 .

It is not an unprimeable number, because it can be changed into a prime (20112269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5028065 + ... + 5028068.

Almost surely, 2^20112266 is an apocalyptic number.

20112266 is a deficient number, since it is larger than the sum of its proper divisors (10056136).

20112266 is a wasteful number, since it uses less digits than its factorization.

20112266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10056135.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 20112266 is about 4484.6701104987. The cubic root of 20112266 is about 271.9487089705.

Adding to 20112266 its reverse (66221102), we get a palindrome (86333368).

The spelling of 20112266 in words is "twenty million, one hundred twelve thousand, two hundred sixty-six".