22500222 has 8 divisors (see below), whose sum is σ = 45000456. Its totient is φ = 7500072.

The previous prime is 22500211. The next prime is 22500229. The reversal of 22500222 is 22200522.

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

22500222 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22500229) 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, 1875013 + ... + 1875024.

It is an arithmetic number, because the mean of its divisors is an integer number (5625057).

Almost surely, 2^22500222 is an apocalyptic number.

22500222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22500222 is a wasteful number, since it uses less digits than its factorization.

22500222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3750042.

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 22500222 is about 4743.4398910495. The cubic root of 22500222 is about 282.3117371501.

Adding to 22500222 its reverse (22200522), we get a palindrome (44700744).

It can be divided in two parts, 22500 and 222, that added together give a palindrome (22722).

The spelling of 22500222 in words is "twenty-two million, five hundred thousand, two hundred twenty-two".