11011112000021 has 16 divisors (see below), whose sum is σ = 13255171046400. Its totient is φ = 9133641281520.

The previous prime is 11011111999969. The next prime is 11011112000027. The reversal of 11011112000021 is 12000021111011.

It is not a de Polignac number, because 11011112000021 - 2¹⁴ = 11011111983637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11011111999966 and 11011112000011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11011112000027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 517769486 + ... + 517790751.

It is an arithmetic number, because the mean of its divisors is an integer number (828448190400).

Almost surely, 2^{11011112000021} is an apocalyptic number.

It is an amenable number.

11011112000021 is a deficient number, since it is larger than the sum of its proper divisors (2244059046379).

11011112000021 is an equidigital number, since it uses as much as digits as its factorization.

11011112000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1035560289 (or 1035560275 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 11011112000021 its reverse (12000021111011), we get a palindrome (23011133111032).

The spelling of 11011112000021 in words is "eleven trillion, eleven billion, one hundred twelve million, twenty-one", and thus it is an aban number.