21110112030000 has 400 divisors, whose sum is σ = 78756577827840. Its totient is φ = 4770948864000.

The previous prime is 21110112029959. The next prime is 21110112030013. The reversal of 21110112030000 is 3021101112.

It is a tau number, because it is divible by the number of its divisors (400).

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

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 18125257 + ... + 19254743.

Almost surely, 2^{21110112030000} is an apocalyptic number.

21110112030000 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 21110112030000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39378288913920).

21110112030000 is an abundant number, since it is smaller than the sum of its proper divisors (57646465797840).

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

21110112030000 is a wasteful number, since it uses less digits than its factorization.

21110112030000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129614 (or 1129593 counting only the distinct ones).

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

Adding to 21110112030000 its reverse (3021101112), we get a palindrome (21113133131112).

The spelling of 21110112030000 in words is "twenty-one trillion, one hundred ten billion, one hundred twelve million, thirty thousand".