21120110001112 has 16 divisors (see below), whose sum is σ = 39622194178200. Its totient is φ = 10554191553600.

The previous prime is 21120110001101. The next prime is 21120110001121. The reversal of 21120110001112 is 21110001102112.

It is a happy number.

It is a super-2 number, since 2×21120110001112² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21120110001092 and 21120110001101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 732915562 + ... + 732944377.

Almost surely, 2^{21120110001112} is an apocalyptic number.

It is an amenable number.

21120110001112 is a deficient number, since it is larger than the sum of its proper divisors (18502084177088).

21120110001112 is a wasteful number, since it uses less digits than its factorization.

21120110001112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1465861746 (or 1465861742 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 21120110001112 its reverse (21110001102112), we get a palindrome (42230111103224).

The spelling of 21120110001112 in words is "twenty-one trillion, one hundred twenty billion, one hundred ten million, one thousand, one hundred twelve".