404021302220 has 12 divisors (see below), whose sum is σ = 848444734704. Its totient is φ = 161608520880.

The previous prime is 404021302219. The next prime is 404021302231. The reversal of 404021302220 is 22203120404.

It is a super-3 number, since 3×404021302220³ (a number of 36 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 20201065111 = 404021302220 / (4 + 0 + 4 + 0 + 2 + 1 + 3 + 0 + 2 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 404021302192 and 404021302201.

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, 10100532536 + ... + 10100532575.

It is an arithmetic number, because the mean of its divisors is an integer number (70703727892).

Almost surely, 2^404021302220 is an apocalyptic number.

It is an amenable number.

404021302220 is an abundant number, since it is smaller than the sum of its proper divisors (444423432484).

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

404021302220 is a wasteful number, since it uses less digits than its factorization.

404021302220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20201065120 (or 20201065118 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 404021302220 its reverse (22203120404), we get a palindrome (426224422624).

The spelling of 404021302220 in words is "four hundred four billion, twenty-one million, three hundred two thousand, two hundred twenty".