21011111000112 has 80 divisors (see below), whose sum is σ = 56101444277760. Its totient is φ = 6772102023936.

The previous prime is 21011111000071. The next prime is 21011111000119. The reversal of 21011111000112 is 21100011111012.

It is a super-3 number, since 3×21011111000112³ (a number of 41 digits) contains 333 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (21011111000119) 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, 55917787 + ... + 56292282.

It is an arithmetic number, because the mean of its divisors is an integer number (701268053472).

Almost surely, 2^{21011111000112} is an apocalyptic number.

It is an amenable number.

21011111000112 is an abundant number, since it is smaller than the sum of its proper divisors (35090333277648).

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

21011111000112 is a wasteful number, since it uses less digits than its factorization.

21011111000112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112210210 (or 112210204 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 21011111000112 its reverse (21100011111012), we get a palindrome (42111122111124).

The spelling of 21011111000112 in words is "twenty-one trillion, eleven billion, one hundred eleven million, one hundred twelve", and thus it is an aban number.