222222321240 has 32 divisors (see below), whose sum is σ = 666666964080. Its totient is φ = 59259285632.

The previous prime is 222222321229. The next prime is 222222321241. The reversal of 222222321240 is 42123222222.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 222222321240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222222321241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 925926219 + ... + 925926458.

Almost surely, 2^222222321240 is an apocalyptic number.

222222321240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222222321240 is an abundant number, since it is smaller than the sum of its proper divisors (444444642840).

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

222222321240 is a wasteful number, since it uses less digits than its factorization.

222222321240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1851852691 (or 1851852687 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 222222321240 its reverse (42123222222), we get a palindrome (264345543462).

The spelling of 222222321240 in words is "two hundred twenty-two billion, two hundred twenty-two million, three hundred twenty-one thousand, two hundred forty".