21301144403 has 32 divisors (see below), whose sum is σ = 26767515648. Its totient is φ = 16467235200.

The previous prime is 21301144379. The next prime is 21301144451. The reversal of 21301144403 is 30444110312.

It is a cyclic number.

It is not a de Polignac number, because 21301144403 - 2⁸ = 21301144147 is a prime.

It is a super-3 number, since 3×21301144403³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21301144463) 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, 13139933 + ... + 13141553.

It is an arithmetic number, because the mean of its divisors is an integer number (836484864).

Almost surely, 2^21301144403 is an apocalyptic number.

21301144403 is a deficient number, since it is larger than the sum of its proper divisors (5466371245).

21301144403 is a wasteful number, since it uses less digits than its factorization.

21301144403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2883.

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

Adding to 21301144403 its reverse (30444110312), we get a palindrome (51745254715).

The spelling of 21301144403 in words is "twenty-one billion, three hundred one million, one hundred forty-four thousand, four hundred three".