21313112120000 has 140 divisors (see below), whose sum is σ = 53573565640056. Its totient is φ = 8408459520000.

The previous prime is 21313112119997. The next prime is 21313112120093. The reversal of 21313112120000 is 2121131312.

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 19 ways as a sum of consecutive naturals, for example, 729506 + ... + 6569505.

Almost surely, 2^{21313112120000} is an apocalyptic number.

21313112120000 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 21313112120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26786782820028).

21313112120000 is an abundant number, since it is smaller than the sum of its proper divisors (32260453520056).

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

21313112120000 is an frugal number, since it uses more digits than its factorization.

21313112120000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7299116 (or 7299091 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 21313112120000 its reverse (2121131312), we get a palindrome (21315233251312).

The spelling of 21313112120000 in words is "twenty-one trillion, three hundred thirteen billion, one hundred twelve million, one hundred twenty thousand".