23421221242503 has 32 divisors (see below), whose sum is σ = 36920536396800. Its totient is φ = 12921918460416.

The previous prime is 23421221242483. The next prime is 23421221242513. The reversal of 23421221242503 is 30524212212432.

It is not a de Polignac number, because 23421221242503 - 2²⁶ = 23421154133639 is a prime.

It is a super-2 number, since 2×23421221242503² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23421221242513) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 96904575 + ... + 97145967.

It is an arithmetic number, because the mean of its divisors is an integer number (1153766762400).

Almost surely, 2^{23421221242503} is an apocalyptic number.

23421221242503 is a deficient number, since it is larger than the sum of its proper divisors (13499315154297).

23421221242503 is a wasteful number, since it uses less digits than its factorization.

23421221242503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400751.

The product of its (nonzero) digits is 46080, while the sum is 33.

Adding to 23421221242503 its reverse (30524212212432), we get a palindrome (53945433454935).

The spelling of 23421221242503 in words is "twenty-three trillion, four hundred twenty-one billion, two hundred twenty-one million, two hundred forty-two thousand, five hundred three".