21113221011300 has 216 divisors, whose sum is σ = 74145621793152. Its totient is φ = 4980022560000.

The previous prime is 21113221011299. The next prime is 21113221011317. The reversal of 21113221011300 is 311012231112.

21113221011300 is a `hidden beast` number, since 2 + 11 + 132 + 210 + 11 + 300 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 28453276 + ... + 29185875.

Almost surely, 2^{21113221011300} is an apocalyptic number.

21113221011300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21113221011300 is an abundant number, since it is smaller than the sum of its proper divisors (53032400781852).

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

21113221011300 is a wasteful number, since it uses less digits than its factorization.

21113221011300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57639219 (or 57639209 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 21113221011300 its reverse (311012231112), we get a palindrome (21424233242412).

The spelling of 21113221011300 in words is "twenty-one trillion, one hundred thirteen billion, two hundred twenty-one million, eleven thousand, three hundred".