21441000234023 has 4 divisors (see below), whose sum is σ = 21489399783528. Its totient is φ = 21392600684520.

The previous prime is 21441000234001. The next prime is 21441000234047. The reversal of 21441000234023 is 32043200014412.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21441000234023 - 2⁶ = 21441000233959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21441000233983 and 21441000234001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21441000239023) 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, 24199774088 + ... + 24199774973.

It is an arithmetic number, because the mean of its divisors is an integer number (5372349945882).

Almost surely, 2^{21441000234023} is an apocalyptic number.

21441000234023 is a deficient number, since it is larger than the sum of its proper divisors (48399549505).

21441000234023 is an equidigital number, since it uses as much as digits as its factorization.

21441000234023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48399549504.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 21441000234023 its reverse (32043200014412), we get a palindrome (53484200248435).

The spelling of 21441000234023 in words is "twenty-one trillion, four hundred forty-one billion, two hundred thirty-four thousand, twenty-three".