21114122243 has 8 divisors (see below), whose sum is σ = 21154828128. Its totient is φ = 21073443264.

The previous prime is 21114122233. The next prime is 21114122269. The reversal of 21114122243 is 34222141112.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21114122243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21114122233) 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, 2256671 + ... + 2266007.

It is an arithmetic number, because the mean of its divisors is an integer number (2644353516).

Almost surely, 2^21114122243 is an apocalyptic number.

21114122243 is a deficient number, since it is larger than the sum of its proper divisors (40705885).

21114122243 is an equidigital number, since it uses as much as digits as its factorization.

21114122243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13453.

The product of its digits is 768, while the sum is 23.

Adding to 21114122243 its reverse (34222141112), we get a palindrome (55336263355).

The spelling of 21114122243 in words is "twenty-one billion, one hundred fourteen million, one hundred twenty-two thousand, two hundred forty-three".