21422404000 has 96 divisors (see below), whose sum is σ = 53376890112. Its totient is φ = 8448160000.

The previous prime is 21422403983. The next prime is 21422404037. The reversal of 21422404000 is 40422412.

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, 246285 + ... + 321715.

It is an arithmetic number, because the mean of its divisors is an integer number (556009272).

Almost surely, 2^21422404000 is an apocalyptic number.

21422404000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21422404000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26688445056).

21422404000 is an abundant number, since it is smaller than the sum of its proper divisors (31954486112).

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

21422404000 is an equidigital number, since it uses as much as digits as its factorization.

21422404000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75527 (or 75509 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 21422404000 its reverse (40422412), we get a palindrome (21462826412).

The spelling of 21422404000 in words is "twenty-one billion, four hundred twenty-two million, four hundred four thousand".