222055240 has 32 divisors (see below), whose sum is σ = 545045760. Its totient is φ = 80747200.

The previous prime is 222055237. The next prime is 222055243. The reversal of 222055240 is 42550222.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (222055237) and next prime (222055243).

It is a super-2 number, since 2×222055240² = 98617059222915200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (222055243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251896 + ... + 252775.

It is an arithmetic number, because the mean of its divisors is an integer number (17032680).

Almost surely, 2^222055240 is an apocalyptic number.

222055240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222055240 is an abundant number, since it is smaller than the sum of its proper divisors (322990520).

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

222055240 is a wasteful number, since it uses less digits than its factorization.

222055240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504693 (or 504689 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 222055240 is about 14901.5180434746. The cubic root of 222055240 is about 605.5551128440. Note that the first 3 decimals are identical.

The spelling of 222055240 in words is "two hundred twenty-two million, fifty-five thousand, two hundred forty".