21112140000 has 720 divisors, whose sum is σ = 82925555328. Its totient is φ = 4685184000.

The previous prime is 21112139977. The next prime is 21112140037. The reversal of 21112140000 is 4121112.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

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, 126419917 + ... + 126420083.

Almost surely, 2^21112140000 is an apocalyptic number.

21112140000 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 21112140000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41462777664).

21112140000 is an abundant number, since it is smaller than the sum of its proper divisors (61813415328).

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

21112140000 is a wasteful number, since it uses less digits than its factorization.

21112140000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257 (or 227 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21112140000 its reverse (4121112), we get a palindrome (21116261112).

The spelling of 21112140000 in words is "twenty-one billion, one hundred twelve million, one hundred forty thousand".