21113342304 has 192 divisors, whose sum is σ = 59836444416. Its totient is φ = 6494552064.

The previous prime is 21113342231. The next prime is 21113342339. The reversal of 21113342304 is 40324331112.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38598159 + ... + 38598705.

It is an arithmetic number, because the mean of its divisors is an integer number (311648148).

Almost surely, 2^21113342304 is an apocalyptic number.

21113342304 is a gapful number since it is divisible by the number (24) 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 21113342304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29918222208).

21113342304 is an abundant number, since it is smaller than the sum of its proper divisors (38723102112).

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

21113342304 is a wasteful number, since it uses less digits than its factorization.

21113342304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997 (or 989 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 21113342304 its reverse (40324331112), we get a palindrome (61437673416).

The spelling of 21113342304 in words is "twenty-one billion, one hundred thirteen million, three hundred forty-two thousand, three hundred four".