21112332120000 has 840 divisors, whose sum is σ = 82603157365872. Its totient is φ = 5111347200000.

The previous prime is 21112332119999. The next prime is 21112332120029. The reversal of 21112332120000 is 2123321112.

21112332120000 is a `hidden beast` number, since 21 + 1 + 123 + 321 + 200 + 0 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 3393716890 + ... + 3393723110.

Almost surely, 2^{21112332120000} is an apocalyptic number.

21112332120000 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 21112332120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41301578682936).

21112332120000 is an abundant number, since it is smaller than the sum of its proper divisors (61490825245872).

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

21112332120000 is a wasteful number, since it uses less digits than its factorization.

21112332120000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7127 (or 7099 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21112332120000 its reverse (2123321112), we get a palindrome (21114455441112).

The spelling of 21112332120000 in words is "twenty-one trillion, one hundred twelve billion, three hundred thirty-two million, one hundred twenty thousand".