220020323232 has 48 divisors (see below), whose sum is σ = 585687920832. Its totient is φ = 72307146240.

The previous prime is 220020323147. The next prime is 220020323233. The reversal of 220020323232 is 232323020022.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×220020323232² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 220020323199 and 220020323208.

It is not an unprimeable number, because it can be changed into a prime (220020323233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16133173 + ... + 16146804.

It is an arithmetic number, because the mean of its divisors is an integer number (12201831684).

Almost surely, 2^220020323232 is an apocalyptic number.

It is an amenable number.

220020323232 is an abundant number, since it is smaller than the sum of its proper divisors (365667597600).

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

220020323232 is a wasteful number, since it uses less digits than its factorization.

220020323232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32280061 (or 32280053 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 21.

Adding to 220020323232 its reverse (232323020022), we get a palindrome (452343343254).

The spelling of 220020323232 in words is "two hundred twenty billion, twenty million, three hundred twenty-three thousand, two hundred thirty-two".