22202222 has 48 divisors (see below), whose sum is σ = 42135552. Its totient is φ = 8577360.

The previous prime is 22202209. The next prime is 22202249. The reversal of 22202222 is 22220222.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

22202222 is a modest number, since divided by 2222 gives 2220 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 22202197 and 22202206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 116147 + ... + 116337.

It is an arithmetic number, because the mean of its divisors is an integer number (877824).

Almost surely, 2^22202222 is an apocalyptic number.

22202222 is a deficient number, since it is larger than the sum of its proper divisors (19933330).

22202222 is a wasteful number, since it uses less digits than its factorization.

22202222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261 (or 242 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 22202222 is about 4711.9233864739. The cubic root of 22202222 is about 281.0598522474.

Adding to 22202222 its reverse (22220222), we get a palindrome (44422444).

It can be divided in two parts, 2220222 and 2, that multiplied together give a palindrome (4440444).

The spelling of 22202222 in words is "twenty-two million, two hundred two thousand, two hundred twenty-two".