14503221021 has 16 divisors (see below), whose sum is σ = 20181358080. Its totient is φ = 9247072560.

The previous prime is 14503221017. The next prime is 14503221023. The reversal of 14503221021 is 12012230541.

It is not a de Polignac number, because 14503221021 - 2² = 14503221017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14503221023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 689226 + ... + 709956.

It is an arithmetic number, because the mean of its divisors is an integer number (1261334880).

Almost surely, 2^14503221021 is an apocalyptic number.

It is an amenable number.

14503221021 is a deficient number, since it is larger than the sum of its proper divisors (5678137059).

14503221021 is a wasteful number, since it uses less digits than its factorization.

14503221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30896.

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 14503221021 its reverse (12012230541), we get a palindrome (26515451562).

The spelling of 14503221021 in words is "fourteen billion, five hundred three million, two hundred twenty-one thousand, twenty-one".