404002222220 has 48 divisors (see below), whose sum is σ = 865909309440. Its totient is φ = 158298888384.

The previous prime is 404002222163. The next prime is 404002222237. The reversal of 404002222220 is 22222200404.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 404002222192 and 404002222201.

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, 806024 + ... + 1207343.

It is an arithmetic number, because the mean of its divisors is an integer number (18039777280).

Almost surely, 2^404002222220 is an apocalyptic number.

It is an amenable number.

404002222220 is an abundant number, since it is smaller than the sum of its proper divisors (461907087220).

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

404002222220 is a wasteful number, since it uses less digits than its factorization.

404002222220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2013582 (or 2013580 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 404002222220 its reverse (22222200404), we get a palindrome (426224422624).

The spelling of 404002222220 in words is "four hundred four billion, two million, two hundred twenty-two thousand, two hundred twenty".