222247243440 has 120 divisors (see below), whose sum is σ = 748414949568. Its totient is φ = 59104373760.

The previous prime is 222247243409. The next prime is 222247243499. The reversal of 222247243440 is 44342742222.

222247243440 is a `hidden beast` number, since 22 + 224 + 72 + 4 + 344 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 222247243395 and 222247243404.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 156301 + ... + 684780.

Almost surely, 2^222247243440 is an apocalyptic number.

222247243440 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 222247243440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (374207474784).

222247243440 is an abundant number, since it is smaller than the sum of its proper divisors (526167706128).

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

222247243440 is a wasteful number, since it uses less digits than its factorization.

222247243440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841467 (or 841458 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 36.

Adding to 222247243440 its reverse (44342742222), we get a palindrome (266589985662).

The spelling of 222247243440 in words is "two hundred twenty-two billion, two hundred forty-seven million, two hundred forty-three thousand, four hundred forty".