222820154424 has 192 divisors, whose sum is σ = 715625164800. Its totient is φ = 63627306624.

The previous prime is 222820154413. The next prime is 222820154441. The reversal of 222820154424 is 424451028222.

222820154424 is a `hidden beast` number, since 2 + 2 + 2 + 8 + 201 + 5 + 442 + 4 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33159337 + ... + 33166055.

It is an arithmetic number, because the mean of its divisors is an integer number (3727214400).

Almost surely, 2^222820154424 is an apocalyptic number.

222820154424 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 222820154424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (357812582400).

222820154424 is an abundant number, since it is smaller than the sum of its proper divisors (492805010376).

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

222820154424 is a wasteful number, since it uses less digits than its factorization.

222820154424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9184 (or 9168 counting only the distinct ones).

The product of its (nonzero) digits is 81920, while the sum is 36.

The spelling of 222820154424 in words is "two hundred twenty-two billion, eight hundred twenty million, one hundred fifty-four thousand, four hundred twenty-four".