20443122220 has 48 divisors (see below), whose sum is σ = 43356297600. Its totient is φ = 8096267520.

The previous prime is 20443122197. The next prime is 20443122233. The reversal of 20443122220 is 2222134402.

It is a super-2 number, since 2×20443122220² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20443122191 and 20443122200.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4054461 + ... + 4059499.

It is an arithmetic number, because the mean of its divisors is an integer number (903256200).

Almost surely, 2^20443122220 is an apocalyptic number.

20443122220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20443122220 is an abundant number, since it is smaller than the sum of its proper divisors (22913175380).

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

20443122220 is a wasteful number, since it uses less digits than its factorization.

20443122220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7018 (or 7016 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 20443122220 its reverse (2222134402), we get a palindrome (22665256622).

The spelling of 20443122220 in words is "twenty billion, four hundred forty-three million, one hundred twenty-two thousand, two hundred twenty".