20412225220 has 24 divisors (see below), whose sum is σ = 43266291264. Its totient is φ = 8088581856.

The previous prime is 20412225209. The next prime is 20412225247. The reversal of 20412225220 is 2252221402.

It is a junction number, because it is equal to n+sod(n) for n = 20412225191 and 20412225200.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4767072 + ... + 4771351.

It is an arithmetic number, because the mean of its divisors is an integer number (1802762136).

Almost surely, 2^20412225220 is an apocalyptic number.

20412225220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20412225220 is an abundant number, since it is smaller than the sum of its proper divisors (22854066044).

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

20412225220 is a wasteful number, since it uses less digits than its factorization.

20412225220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9538539 (or 9538537 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

Adding to 20412225220 its reverse (2252221402), we get a palindrome (22664446622).

The spelling of 20412225220 in words is "twenty billion, four hundred twelve million, two hundred twenty-five thousand, two hundred twenty".