21114120441 has 4 divisors (see below), whose sum is σ = 28152160592. Its totient is φ = 14076080292.

The previous prime is 21114120431. The next prime is 21114120449. The reversal of 21114120441 is 14402141112.

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 not a de Polignac number, because 21114120441 - 2²³ = 21105731833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21114120449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3519020071 + ... + 3519020076.

It is an arithmetic number, because the mean of its divisors is an integer number (7038040148).

Almost surely, 2^21114120441 is an apocalyptic number.

It is an amenable number.

21114120441 is a deficient number, since it is larger than the sum of its proper divisors (7038040151).

21114120441 is an equidigital number, since it uses as much as digits as its factorization.

21114120441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7038040150.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 21114120441 its reverse (14402141112), we get a palindrome (35516261553).

The spelling of 21114120441 in words is "twenty-one billion, one hundred fourteen million, one hundred twenty thousand, four hundred forty-one".