221222223000 has 192 divisors, whose sum is σ = 767941218720. Its totient is φ = 57398112000.

The previous prime is 221222222953. The next prime is 221222223071. The reversal of 221222223000 is 322222122.

221222223000 is a `hidden beast` number, since 2 + 212 + 222 + 230 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 835 + ... + 665165.

Almost surely, 2^221222223000 is an apocalyptic number.

221222223000 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 221222223000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (383970609360).

221222223000 is an abundant number, since it is smaller than the sum of its proper divisors (546718995720).

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

221222223000 is a wasteful number, since it uses less digits than its factorization.

221222223000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664395 (or 664378 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 221222223000 its reverse (322222122), we get a palindrome (221544445122).

The spelling of 221222223000 in words is "two hundred twenty-one billion, two hundred twenty-two million, two hundred twenty-three thousand".