21441120023 has 16 divisors (see below), whose sum is σ = 22283669760. Its totient is φ = 20608473600.

The previous prime is 21441120013. The next prime is 21441120049. The reversal of 21441120023 is 32002114412.

It is a cyclic number.

It is not a de Polignac number, because 21441120023 - 2¹⁴ = 21441103639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21441119977 and 21441120004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21441120013) 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 15 ways as a sum of consecutive naturals, for example, 2962373 + ... + 2969601.

It is an arithmetic number, because the mean of its divisors is an integer number (1392729360).

Almost surely, 2^21441120023 is an apocalyptic number.

21441120023 is a deficient number, since it is larger than the sum of its proper divisors (842549737).

21441120023 is a wasteful number, since it uses less digits than its factorization.

21441120023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7898.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21441120023 its reverse (32002114412), we get a palindrome (53443234435).

The spelling of 21441120023 in words is "twenty-one billion, four hundred forty-one million, one hundred twenty thousand, twenty-three".