222001023440 has 160 divisors (see below), whose sum is σ = 605172052224. Its totient is φ = 74165944320.

The previous prime is 222001023421. The next prime is 222001023463. The reversal of 222001023440 is 44320100222.

It is a Harshad number since it is a multiple of its sum of digits (20).

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 31 ways as a sum of consecutive naturals, for example, 3624752 + ... + 3685488.

Almost surely, 2^222001023440 is an apocalyptic number.

222001023440 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 222001023440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (302586026112).

222001023440 is an abundant number, since it is smaller than the sum of its proper divisors (383171028784).

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

222001023440 is a wasteful number, since it uses less digits than its factorization.

222001023440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60925 (or 60919 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 222001023440 its reverse (44320100222), we get a palindrome (266321123662).

The spelling of 222001023440 in words is "two hundred twenty-two billion, one million, twenty-three thousand, four hundred forty".