21112102001012 has 24 divisors (see below), whose sum is σ = 41162473537920. Its totient is φ = 9392231063360.

The previous prime is 21112102000993. The next prime is 21112102001069. The reversal of 21112102001012 is 21010020121112.

It is a super-2 number, since 2×21112102001012² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5104471337 + ... + 5104475472.

It is an arithmetic number, because the mean of its divisors is an integer number (1715103064080).

Almost surely, 2^{21112102001012} is an apocalyptic number.

21112102001012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21112102001012 is a deficient number, since it is larger than the sum of its proper divisors (20050371536908).

21112102001012 is a wasteful number, since it uses less digits than its factorization.

21112102001012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10208946871 (or 10208946869 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21112102001012 its reverse (21010020121112), we get a palindrome (42122122122124).

The spelling of 21112102001012 in words is "twenty-one trillion, one hundred twelve billion, one hundred two million, one thousand, twelve".