21444020301 has 16 divisors (see below), whose sum is σ = 31195491840. Its totient is φ = 12994630320.

The previous prime is 21444020281. The next prime is 21444020309. The reversal of 21444020301 is 10302044412.

It is not a de Polignac number, because 21444020301 - 2¹⁰ = 21444019277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21444020309) 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, 231696 + ... + 310758.

It is an arithmetic number, because the mean of its divisors is an integer number (1949718240).

Almost surely, 2^21444020301 is an apocalyptic number.

It is an amenable number.

21444020301 is a deficient number, since it is larger than the sum of its proper divisors (9751471539).

21444020301 is a wasteful number, since it uses less digits than its factorization.

21444020301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87296.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 21444020301 its reverse (10302044412), we get a palindrome (31746064713).

The spelling of 21444020301 in words is "twenty-one billion, four hundred forty-four million, twenty thousand, three hundred one".