22221122 has 32 divisors (see below), whose sum is σ = 41779584. Its totient is φ = 8611200.

The previous prime is 22221109. The next prime is 22221161. The reversal of 22221122 is 22112222.

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

It is a nude number because it is divisible by every one of its digits.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 22221097 and 22221106.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47972 + ... + 48432.

It is an arithmetic number, because the mean of its divisors is an integer number (1305612).

Almost surely, 2^22221122 is an apocalyptic number.

22221122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22221122 is a deficient number, since it is larger than the sum of its proper divisors (19558462).

22221122 is a wasteful number, since it uses less digits than its factorization.

22221122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794.

The product of its digits is 64, while the sum is 14.

The square root of 22221122 is about 4713.9285102768. The cubic root of 22221122 is about 281.1395818739.

Adding to 22221122 its reverse (22112222), we get a palindrome (44333344).

Subtracting from 22221122 its reverse (22112222), we obtain a square (108900 = 330²).

It can be divided in two parts, 22 and 221122, that multiplied together give a palindrome (4864684).

The spelling of 22221122 in words is "twenty-two million, two hundred twenty-one thousand, one hundred twenty-two".