21313203331112 has 192 divisors, whose sum is σ = 50836648386240. Its totient is φ = 8283587558400.

The previous prime is 21313203331099. The next prime is 21313203331151. The reversal of 21313203331112 is 21113330231312.

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, 3614242148 + ... + 3614248044.

It is an arithmetic number, because the mean of its divisors is an integer number (264774210345).

Almost surely, 2^{21313203331112} is an apocalyptic number.

21313203331112 is a gapful number since it is divisible by the number (22) 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 21313203331112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25418324193120).

21313203331112 is an abundant number, since it is smaller than the sum of its proper divisors (29523445055128).

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

21313203331112 is a wasteful number, since it uses less digits than its factorization.

21313203331112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7832 (or 7821 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 21313203331112 its reverse (21113330231312), we get a palindrome (42426533562424).

The spelling of 21313203331112 in words is "twenty-one trillion, three hundred thirteen billion, two hundred three million, three hundred thirty-one thousand, one hundred twelve".