21231201130403 has 16 divisors (see below), whose sum is σ = 24366077510400. Its totient is φ = 18319680466080.

The previous prime is 21231201130361. The next prime is 21231201130463. The reversal of 21231201130403 is 30403110213212.

It is not a de Polignac number, because 21231201130403 - 2⁸ = 21231201130147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21231201130463) 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, 564010751 + ... + 564048392.

It is an arithmetic number, because the mean of its divisors is an integer number (1522879844400).

Almost surely, 2^{21231201130403} is an apocalyptic number.

21231201130403 is a deficient number, since it is larger than the sum of its proper divisors (3134876379997).

21231201130403 is a wasteful number, since it uses less digits than its factorization.

21231201130403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128059242.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 21231201130403 its reverse (30403110213212), we get a palindrome (51634311343615).

It can be divided in two parts, 2123120 and 1130403, that added together give a palindrome (3253523).

The spelling of 21231201130403 in words is "twenty-one trillion, two hundred thirty-one billion, two hundred one million, one hundred thirty thousand, four hundred three".