21241111113423 has 12 divisors (see below), whose sum is σ = 32486405232528. Its totient is φ = 13327755992640.

The previous prime is 21241111113377. The next prime is 21241111113449. The reversal of 21241111113423 is 32431111114212.

21241111113423 is a `hidden beast` number, since 2 + 1 + 2 + 411 + 111 + 134 + 2 + 3 = 666.

It is not a de Polignac number, because 21241111113423 - 2¹⁴ = 21241111097039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21241111113223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69415395643 + ... + 69415395948.

It is an arithmetic number, because the mean of its divisors is an integer number (2707200436044).

Almost surely, 2^{21241111113423} is an apocalyptic number.

21241111113423 is a deficient number, since it is larger than the sum of its proper divisors (11245294119105).

21241111113423 is a wasteful number, since it uses less digits than its factorization.

21241111113423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138830791614 (or 138830791611 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

Adding to 21241111113423 its reverse (32431111114212), we get a palindrome (53672222227635).

The spelling of 21241111113423 in words is "twenty-one trillion, two hundred forty-one billion, one hundred eleven million, one hundred thirteen thousand, four hundred twenty-three".