21011120000012 has 48 divisors (see below), whose sum is σ = 37711881480000. Its totient is φ = 10240383605760.

The previous prime is 21011120000011. The next prime is 21011120000063. The reversal of 21011120000012 is 21000002111012.

It is a junction number, because it is equal to n+sod(n) for n = 21011119999948 and 21011120000002.

It is not an unprimeable number, because it can be changed into a prime (21011120000011) 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, 7444712 + ... + 9871472.

It is an arithmetic number, because the mean of its divisors is an integer number (785664197500).

Almost surely, 2^{21011120000012} is an apocalyptic number.

It is an amenable number.

21011120000012 is a deficient number, since it is larger than the sum of its proper divisors (16700761479988).

21011120000012 is a wasteful number, since it uses less digits than its factorization.

21011120000012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2427186 (or 2427184 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21011120000012 its reverse (21000002111012), we get a palindrome (42011122111024).

The spelling of 21011120000012 in words is "twenty-one trillion, eleven billion, one hundred twenty million, twelve", and thus it is an aban number.