21442300000 has 288 divisors, whose sum is σ = 58432697568. Its totient is φ = 7680000000.

The previous prime is 21442299997. The next prime is 21442300013. The reversal of 21442300000 is 324412.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 111099904 + ... + 111100096.

It is an arithmetic number, because the mean of its divisors is an integer number (202891311).

Almost surely, 2^21442300000 is an apocalyptic number.

21442300000 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 21442300000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29216348784).

21442300000 is an abundant number, since it is smaller than the sum of its proper divisors (36990397568).

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

21442300000 is a wasteful number, since it uses less digits than its factorization.

21442300000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340 (or 312 counting only the distinct ones).

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

Adding to 21442300000 its reverse (324412), we get a palindrome (21442624412).

The spelling of 21442300000 in words is "twenty-one billion, four hundred forty-two million, three hundred thousand".