220221443000 has 128 divisors (see below), whose sum is σ = 556559640000. Its totient is φ = 81077875200.

The previous prime is 220221442949. The next prime is 220221443009. The reversal of 220221443000 is 344122022.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220221443009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4512731 + ... + 4561269.

Almost surely, 2^220221443000 is an apocalyptic number.

220221443000 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 220221443000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (278279820000).

220221443000 is an abundant number, since it is smaller than the sum of its proper divisors (336338197000).

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

220221443000 is a wasteful number, since it uses less digits than its factorization.

220221443000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48922 (or 48908 counting only the distinct ones).

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

Adding to 220221443000 its reverse (344122022), we get a palindrome (220565565022).

The spelling of 220221443000 in words is "two hundred twenty billion, two hundred twenty-one million, four hundred forty-three thousand".