21422203404 has 96 divisors (see below), whose sum is σ = 63116153856. Its totient is φ = 5510123520.

The previous prime is 21422203399. The next prime is 21422203417. The reversal of 21422203404 is 40430222412.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 293277 + ... + 358964.

It is an arithmetic number, because the mean of its divisors is an integer number (657459936).

Almost surely, 2^21422203404 is an apocalyptic number.

It is an amenable number.

21422203404 is an abundant number, since it is smaller than the sum of its proper divisors (41693950452).

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

21422203404 is a wasteful number, since it uses less digits than its factorization.

21422203404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652295 (or 652293 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 21422203404 its reverse (40430222412), we get a palindrome (61852425816).

The spelling of 21422203404 in words is "twenty-one billion, four hundred twenty-two million, two hundred three thousand, four hundred four".