222011250 has 80 divisors (see below), whose sum is σ = 563144736. Its totient is φ = 58320000.

The previous prime is 222011201. The next prime is 222011261. The reversal of 222011250 is 52110222.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 273345 + ... + 274155.

Almost surely, 2^222011250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222011250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281572368).

222011250 is an abundant number, since it is smaller than the sum of its proper divisors (341133486).

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

222011250 is an equidigital number, since it uses as much as digits as its factorization.

222011250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909 (or 894 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 222011250 is about 14900.0419462497. The cubic root of 222011250 is about 605.5151226016.

Adding to 222011250 its reverse (52110222), we get a palindrome (274121472).

The spelling of 222011250 in words is "two hundred twenty-two million, eleven thousand, two hundred fifty".