220001232220 has 48 divisors (see below), whose sum is σ = 576003230208. Its totient is φ = 68571812160.

The previous prime is 220001232163. The next prime is 220001232221. The reversal of 220001232220 is 22232100022.

It is a super-2 number, since 2×220001232220² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 220001232194 and 220001232203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220001232221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71427432 + ... + 71430511.

It is an arithmetic number, because the mean of its divisors is an integer number (12000067296).

Almost surely, 2^220001232220 is an apocalyptic number.

220001232220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220001232220 is an abundant number, since it is smaller than the sum of its proper divisors (356001997988).

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

220001232220 is a wasteful number, since it uses less digits than its factorization.

220001232220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142857970 (or 142857968 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 220001232220 its reverse (22232100022), we get a palindrome (242233332242).

The spelling of 220001232220 in words is "two hundred twenty billion, one million, two hundred thirty-two thousand, two hundred twenty".