220431550000 has 120 divisors (see below), whose sum is σ = 534332175552. Its totient is φ = 88088640000.

The previous prime is 220431549977. The next prime is 220431550033. The reversal of 220431550000 is 55134022.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 103148932 + ... + 103151068.

Almost surely, 2^220431550000 is an apocalyptic number.

220431550000 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 220431550000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267166087776).

220431550000 is an abundant number, since it is smaller than the sum of its proper divisors (313900625552).

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

220431550000 is an equidigital number, since it uses as much as digits as its factorization.

220431550000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4233 (or 4207 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

Adding to 220431550000 its reverse (55134022), we get a palindrome (220486684022).

The spelling of 220431550000 in words is "two hundred twenty billion, four hundred thirty-one million, five hundred fifty thousand".