21243114023 has 8 divisors (see below), whose sum is σ = 21343526400. Its totient is φ = 21142748088.

The previous prime is 21243114007. The next prime is 21243114041. The reversal of 21243114023 is 32041134212.

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 21243114023 - 2⁴ = 21243114007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21243114023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21243114323) 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, 1199648 + ... + 1217226.

It is an arithmetic number, because the mean of its divisors is an integer number (2667940800).

Almost surely, 2^21243114023 is an apocalyptic number.

21243114023 is a deficient number, since it is larger than the sum of its proper divisors (100412377).

21243114023 is a wasteful number, since it uses less digits than its factorization.

21243114023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23221.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 21243114023 its reverse (32041134212), we get a palindrome (53284248235).

The spelling of 21243114023 in words is "twenty-one billion, two hundred forty-three million, one hundred fourteen thousand, twenty-three".