21430201441 has 16 divisors (see below), whose sum is σ = 24683270400. Its totient is φ = 18400813200.

The previous prime is 21430201423. The next prime is 21430201459. The reversal of 21430201441 is 14410203412.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21430201423) and next prime (21430201459).

It is not a de Polignac number, because 21430201441 - 2²⁷ = 21295983713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21430204441) 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, 85711 + ... + 224068.

It is an arithmetic number, because the mean of its divisors is an integer number (1542704400).

Almost surely, 2^21430201441 is an apocalyptic number.

It is an amenable number.

21430201441 is a deficient number, since it is larger than the sum of its proper divisors (3253068959).

21430201441 is a wasteful number, since it uses less digits than its factorization.

21430201441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310140.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 21430201441 its reverse (14410203412), we get a palindrome (35840404853).

The spelling of 21430201441 in words is "twenty-one billion, four hundred thirty million, two hundred one thousand, four hundred forty-one".