222705126 has 56 divisors (see below), whose sum is σ = 572434704. Its totient is φ = 63627120.

The previous prime is 222705121. The next prime is 222705143. The reversal of 222705126 is 621507222.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 222705126.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222705121) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 705 + ... + 21116.

Almost surely, 2^222705126 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222705126, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (286217352).

222705126 is an abundant number, since it is smaller than the sum of its proper divisors (349729578).

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

222705126 is an equidigital number, since it uses as much as digits as its factorization.

222705126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21848 (or 21833 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 222705126 is about 14923.3081453142. The cubic root of 222705126 is about 606.1452940510.

The spelling of 222705126 in words is "two hundred twenty-two million, seven hundred five thousand, one hundred twenty-six".