21302254000 has 80 divisors (see below), whose sum is σ = 52009439040. Its totient is φ = 8438092800.

The previous prime is 21302253983. The next prime is 21302254021. The reversal of 21302254000 is 45220312.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 154296 + ... + 257704.

It is an arithmetic number, because the mean of its divisors is an integer number (650117988).

Almost surely, 2^21302254000 is an apocalyptic number.

21302254000 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 21302254000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26004719520).

21302254000 is an abundant number, since it is smaller than the sum of its proper divisors (30707185040).

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

21302254000 is a wasteful number, since it uses less digits than its factorization.

21302254000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103535 (or 103519 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

Adding to 21302254000 its reverse (45220312), we get a palindrome (21347474312).

The spelling of 21302254000 in words is "twenty-one billion, three hundred two million, two hundred fifty-four thousand".