22200222 has 32 divisors (see below), whose sum is σ = 49751424. Its totient is φ = 6544800.

The previous prime is 22200179. The next prime is 22200263.

22200222 is nontrivially palindromic in base 10.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 22200198 and 22200207.

It is a congruent number.

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, 2104 + ... + 6987.

It is an arithmetic number, because the mean of its divisors is an integer number (1554732).

Almost surely, 2^22200222 is an apocalyptic number.

22200222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22200222 is an abundant number, since it is smaller than the sum of its proper divisors (27551202).

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

22200222 is a wasteful number, since it uses less digits than its factorization.

22200222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9144.

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

The square root of 22200222 is about 4711.7111541350. The cubic root of 22200222 is about 281.0514126028.

It can be divided in two parts, 22200 and 222, that multiplied together give a square (4928400 = 2220²).

The spelling of 22200222 in words is "twenty-two million, two hundred thousand, two hundred twenty-two".