21422203000 has 96 divisors (see below), whose sum is σ = 55099633680. Its totient is φ = 7789848000.

The previous prime is 21422202961. The next prime is 21422203009. The reversal of 21422203000 is 30222412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21422203009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32479 + ... + 209521.

Almost surely, 2^21422203000 is an apocalyptic number.

21422203000 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 21422203000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27549816840).

21422203000 is an abundant number, since it is smaller than the sum of its proper divisors (33677430680).

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

21422203000 is a wasteful number, since it uses less digits than its factorization.

21422203000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177086 (or 177061 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 21422203000 its reverse (30222412), we get a palindrome (21452425412).

It can be divided in two parts, 21422 and 203000, that added together give a palindrome (224422).

The spelling of 21422203000 in words is "twenty-one billion, four hundred twenty-two million, two hundred three thousand".