220321320000 has 140 divisors (see below), whose sum is σ = 728434088976. Its totient is φ = 58752320000.

The previous prime is 220321319957. The next prime is 220321320007. The reversal of 220321320000 is 23123022.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (220321320007) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 798006 + ... + 1038005.

Almost surely, 2^220321320000 is an apocalyptic number.

220321320000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220321320000 is an abundant number, since it is smaller than the sum of its proper divisors (508112768976).

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

220321320000 is an equidigital number, since it uses as much as digits as its factorization.

220321320000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1836046 (or 1836021 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 220321320000 its reverse (23123022), we get a palindrome (220344443022).

The spelling of 220321320000 in words is "two hundred twenty billion, three hundred twenty-one million, three hundred twenty thousand".