222181458384 has 160 divisors (see below), whose sum is σ = 647649976320. Its totient is φ = 65254537216.

The previous prime is 222181458379. The next prime is 222181458427. The reversal of 222181458384 is 483854181222.

It is a super-2 number, since 2×222181458384² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 756157 + ... + 1008035.

It is an arithmetic number, because the mean of its divisors is an integer number (4047812352).

Almost surely, 2^222181458384 is an apocalyptic number.

222181458384 is a gapful number since it is divisible by the number (24) 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 222181458384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (323824988160).

222181458384 is an abundant number, since it is smaller than the sum of its proper divisors (425468517936).

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

222181458384 is a wasteful number, since it uses less digits than its factorization.

222181458384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251977 (or 251971 counting only the distinct ones).

The product of its digits is 983040, while the sum is 48.

The spelling of 222181458384 in words is "two hundred twenty-two billion, one hundred eighty-one million, four hundred fifty-eight thousand, three hundred eighty-four".