21310443301 has 16 divisors (see below), whose sum is σ = 25706536960. Its totient is φ = 17257529520.

The previous prime is 21310443233. The next prime is 21310443331. The reversal of 21310443301 is 10334401312.

It is not a de Polignac number, because 21310443301 - 2⁹ = 21310442789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21310443331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169485 + ... + 267106.

It is an arithmetic number, because the mean of its divisors is an integer number (1606658560).

Almost surely, 2^21310443301 is an apocalyptic number.

It is an amenable number.

21310443301 is a deficient number, since it is larger than the sum of its proper divisors (4396093659).

21310443301 is a wasteful number, since it uses less digits than its factorization.

21310443301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436984.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21310443301 its reverse (10334401312), we get a palindrome (31644844613).

The spelling of 21310443301 in words is "twenty-one billion, three hundred ten million, four hundred forty-three thousand, three hundred one".