21332443000 has 64 divisors (see below), whose sum is σ = 54455937120. Its totient is φ = 7757248000.

The previous prime is 21332442997. The next prime is 21332443003. The reversal of 21332443000 is 34423312.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21332442997) and next prime (21332443003).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21332443003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 958657 + ... + 980656.

Almost surely, 2^21332443000 is an apocalyptic number.

21332443000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21332443000 is an abundant number, since it is smaller than the sum of its proper divisors (33123494120).

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

21332443000 is a wasteful number, since it uses less digits than its factorization.

21332443000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1939345 (or 1939331 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 21332443000 its reverse (34423312), we get a palindrome (21366866312).

The spelling of 21332443000 in words is "twenty-one billion, three hundred thirty-two million, four hundred forty-three thousand".