21114204457711 has 8 divisors (see below), whose sum is σ = 21188969421840. Its totient is φ = 21039440596032.

The previous prime is 21114204457667. The next prime is 21114204457769. The reversal of 21114204457711 is 11775440241112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21114204457711 - 2²⁹ = 21113667586799 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 (21114804457711) by changing a digit.

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, 67694505 + ... + 68005693.

It is an arithmetic number, because the mean of its divisors is an integer number (2648621177730).

Almost surely, 2^{21114204457711} is an apocalyptic number.

21114204457711 is a deficient number, since it is larger than the sum of its proper divisors (74764964129).

21114204457711 is a wasteful number, since it uses less digits than its factorization.

21114204457711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551225.

The product of its (nonzero) digits is 62720, while the sum is 40.

Adding to 21114204457711 its reverse (11775440241112), we get a palindrome (32889644698823).

The spelling of 21114204457711 in words is "twenty-one trillion, one hundred fourteen billion, two hundred four million, four hundred fifty-seven thousand, seven hundred eleven".