21114323254441 has 4 divisors (see below), whose sum is σ = 21114486168912. Its totient is φ = 21114160339972.

The previous prime is 21114323254391. The next prime is 21114323254457. The reversal of 21114323254441 is 14445232341112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21114323254441 - 2³¹ = 21112175770793 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21114323254441.

It is not an unprimeable number, because it can be changed into a prime (21114323224441) 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, 81262675 + ... + 81522088.

It is an arithmetic number, because the mean of its divisors is an integer number (5278621542228).

Almost surely, 2^{21114323254441} is an apocalyptic number.

It is an amenable number.

21114323254441 is a deficient number, since it is larger than the sum of its proper divisors (162914471).

21114323254441 is a wasteful number, since it uses less digits than its factorization.

21114323254441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162914470.

The product of its digits is 92160, while the sum is 37.

Adding to 21114323254441 its reverse (14445232341112), we get a palindrome (35559555595553).

The spelling of 21114323254441 in words is "twenty-one trillion, one hundred fourteen billion, three hundred twenty-three million, two hundred fifty-four thousand, four hundred forty-one".