21043214000111 has 4 divisors (see below), whose sum is σ = 21440255773752. Its totient is φ = 20646172226472.

The previous prime is 21043214000023. The next prime is 21043214000117. The reversal of 21043214000111 is 11100041234012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21043214000111 - 2¹⁸ = 21043213737967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21043214000117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198520886741 + ... + 198520886846.

It is an arithmetic number, because the mean of its divisors is an integer number (5360063943438).

Almost surely, 2^{21043214000111} is an apocalyptic number.

21043214000111 is a deficient number, since it is larger than the sum of its proper divisors (397041773641).

21043214000111 is an equidigital number, since it uses as much as digits as its factorization.

21043214000111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397041773640.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 21043214000111 its reverse (11100041234012), we get a palindrome (32143255234123).

The spelling of 21043214000111 in words is "twenty-one trillion, forty-three billion, two hundred fourteen million, one hundred eleven", and thus it is an aban number.