22002222 has 16 divisors (see below), whose sum is σ = 48004992. Its totient is φ = 6667320.

The previous prime is 22002217. The next prime is 22002257. The reversal of 22002222 is 22220022.

22002222 is a modest number, since divided by 2222 gives 2200 as remainder.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 22002198 and 22002207.

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, 166618 + ... + 166749.

It is an arithmetic number, because the mean of its divisors is an integer number (3000312).

Almost surely, 2^22002222 is an apocalyptic number.

22002222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22002222 is an abundant number, since it is smaller than the sum of its proper divisors (26002770).

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

22002222 is a wasteful number, since it uses less digits than its factorization.

22002222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333383.

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 22002222 is about 4690.6526198387. The cubic root of 22002222 is about 280.2133662804.

Adding to 22002222 its reverse (22220022), we get a palindrome (44222244).

It can be divided in two parts, 220022 and 22, that multiplied together give a palindrome (4840484).

The spelling of 22002222 in words is "twenty-two million, two thousand, two hundred twenty-two".