22420222 has 16 divisors (see below), whose sum is σ = 37469952. Its totient is φ = 9973720.

The previous prime is 22420213. The next prime is 22420241. The reversal of 22420222 is 22202422.

It is a junction number, because it is equal to n+sod(n) for n = 22420196 and 22420205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9808 + ... + 11875.

It is an arithmetic number, because the mean of its divisors is an integer number (2341872).

Almost surely, 2^22420222 is an apocalyptic number.

22420222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22420222 is a deficient number, since it is larger than the sum of its proper divisors (15049730).

22420222 is a wasteful number, since it uses less digits than its factorization.

22420222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21743.

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 22420222 is about 4734.9996832101. Note that the first 3 decimals coincide. The cubic root of 22420222 is about 281.9767514325.

Adding to 22420222 its reverse (22202422), we get a palindrome (44622644).

The spelling of 22420222 in words is "twenty-two million, four hundred twenty thousand, two hundred twenty-two".