220331602420 has 12 divisors (see below), whose sum is σ = 462696365124. Its totient is φ = 88132640960.

The previous prime is 220331602397. The next prime is 220331602501. The reversal of 220331602420 is 24206133022.

It can be written as a sum of positive squares in 2 ways, for example, as 32137015824 + 188194586596 = 179268^2 + 433814^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5508290041 + ... + 5508290080.

It is an arithmetic number, because the mean of its divisors is an integer number (38558030427).

Almost surely, 2^220331602420 is an apocalyptic number.

220331602420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220331602420 is an abundant number, since it is smaller than the sum of its proper divisors (242364762704).

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

220331602420 is a wasteful number, since it uses less digits than its factorization.

220331602420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11016580130 (or 11016580128 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 220331602420 its reverse (24206133022), we get a palindrome (244537735442).

The spelling of 220331602420 in words is "two hundred twenty billion, three hundred thirty-one million, six hundred two thousand, four hundred twenty".