21041013023 has 8 divisors (see below), whose sum is σ = 21564076800. Its totient is φ = 20524367448.

The previous prime is 21041013011. The next prime is 21041013029. The reversal of 21041013023 is 32031014012.

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

It is a cyclic number.

It is not a de Polignac number, because 21041013023 - 2⁸ = 21041012767 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21041012992 and 21041013010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21041013029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1597913 + ... + 1611026.

It is an arithmetic number, because the mean of its divisors is an integer number (2695509600).

Almost surely, 2^21041013023 is an apocalyptic number.

21041013023 is a deficient number, since it is larger than the sum of its proper divisors (523063777).

21041013023 is an equidigital number, since it uses as much as digits as its factorization.

21041013023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3209101.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21041013023 its reverse (32031014012), we get a palindrome (53072027035).

The spelling of 21041013023 in words is "twenty-one billion, forty-one million, thirteen thousand, twenty-three".