21000111100012 has 24 divisors (see below), whose sum is σ = 40110880415760. Its totient is φ = 9540800468160.

The previous prime is 21000111099971. The next prime is 21000111100091.

21000111100012 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117524143 + ... + 117702694.

It is an arithmetic number, because the mean of its divisors is an integer number (1671286683990).

Almost surely, 2^{21000111100012} is an apocalyptic number.

21000111100012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21000111100012 is a deficient number, since it is larger than the sum of its proper divisors (19110769315748).

21000111100012 is a wasteful number, since it uses less digits than its factorization.

21000111100012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235228881 (or 235228879 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

It can be divided in two parts, 2100011 and 1100012, that multiplied together give a palindrome (2310037300132).

The spelling of 21000111100012 in words is "twenty-one trillion, one hundred eleven million, one hundred thousand, twelve".