21113112230320 has 80 divisors (see below), whose sum is σ = 53551636538400. Its totient is φ = 7677336729600.

The previous prime is 21113112230311. The next prime is 21113112230377. The reversal of 21113112230320 is 2303221131112.

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

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

It is a junction number, because it is equal to n+sod(n) for n = 21113112230291 and 21113112230300.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47617006 + ... + 48058354.

It is an arithmetic number, because the mean of its divisors is an integer number (669395456730).

Almost surely, 2^{21113112230320} is an apocalyptic number.

21113112230320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21113112230320 is an abundant number, since it is smaller than the sum of its proper divisors (32438524308080).

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

21113112230320 is a wasteful number, since it uses less digits than its factorization.

21113112230320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495734 (or 495728 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 21113112230320 its reverse (2303221131112), we get a palindrome (23416333361432).

The spelling of 21113112230320 in words is "twenty-one trillion, one hundred thirteen billion, one hundred twelve million, two hundred thirty thousand, three hundred twenty".