21404122022 has 8 divisors (see below), whose sum is σ = 33795982200. Its totient is φ = 10138794624.

The previous prime is 21404122021. The next prime is 21404122031. The reversal of 21404122022 is 22022140412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21404121985 and 21404122003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21404122021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 281633147 + ... + 281633222.

It is an arithmetic number, because the mean of its divisors is an integer number (4224497775).

Almost surely, 2^21404122022 is an apocalyptic number.

21404122022 is a deficient number, since it is larger than the sum of its proper divisors (12391860178).

21404122022 is a wasteful number, since it uses less digits than its factorization.

21404122022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563266390.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 21404122022 its reverse (22022140412), we get a palindrome (43426262434).

The spelling of 21404122022 in words is "twenty-one billion, four hundred four million, one hundred twenty-two thousand, twenty-two".