1220403442404 has 24 divisors (see below), whose sum is σ = 2862062900928. Its totient is φ = 404736166240.

The previous prime is 1220403442393. The next prime is 1220403442421. The reversal of 1220403442404 is 4042443040221.

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, 258120192 + ... + 258124919.

It is an arithmetic number, because the mean of its divisors is an integer number (119252620872).

Almost surely, 2^{1220403442404} is an apocalyptic number.

It is an amenable number.

1220403442404 is an abundant number, since it is smaller than the sum of its proper divisors (1641659458524).

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

1220403442404 is a wasteful number, since it uses less digits than its factorization.

1220403442404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516245315 (or 516245313 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 30.

Adding to 1220403442404 its reverse (4042443040221), we get a palindrome (5262846482625).

The spelling of 1220403442404 in words is "one trillion, two hundred twenty billion, four hundred three million, four hundred forty-two thousand, four hundred four".