222202240 has 128 divisors (see below), whose sum is σ = 606100320. Its totient is φ = 77168640.

The previous prime is 222202237. The next prime is 222202243. The reversal of 222202240 is 42202222.

It is an interprime number because it is at equal distance from previous prime (222202237) and next prime (222202243).

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×222202240² = 98747670922035200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222202243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140655 + ... + 142225.

Almost surely, 2^222202240 is an apocalyptic number.

222202240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222202240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (303050160).

222202240 is an abundant number, since it is smaller than the sum of its proper divisors (383898080).

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

222202240 is a wasteful number, since it uses less digits than its factorization.

222202240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1620 (or 1608 counting only the distinct ones).

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

The square root of 222202240 is about 14906.4496108228. The cubic root of 222202240 is about 605.6887086794.

Adding to 222202240 its reverse (42202222), we get a palindrome (264404462).

The spelling of 222202240 in words is "two hundred twenty-two million, two hundred two thousand, two hundred forty".