222101440 has 56 divisors (see below), whose sum is σ = 576968112. Its totient is φ = 80762880.

The previous prime is 222101437. The next prime is 222101489. The reversal of 222101440 is 44101222.

It is a super-3 number, since 3×222101440³ (a number of 26 digits) contains 333 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 an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28029 + ... + 35068.

It is an arithmetic number, because the mean of its divisors is an integer number (10303002).

Almost surely, 2^222101440 is an apocalyptic number.

222101440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222101440 is an abundant number, since it is smaller than the sum of its proper divisors (354866672).

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

222101440 is a wasteful number, since it uses less digits than its factorization.

222101440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63125 (or 63115 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 222101440 is about 14903.0681404870. The cubic root of 222101440 is about 605.5971064582.

Adding to 222101440 its reverse (44101222), we get a palindrome (266202662).

The spelling of 222101440 in words is "two hundred twenty-two million, one hundred one thousand, four hundred forty".