21321101301 has 32 divisors (see below), whose sum is σ = 29384208000. Its totient is φ = 13742776320.

The previous prime is 21321101273. The next prime is 21321101309. The reversal of 21321101301 is 10310112312.

It is a happy number.

It is not a de Polignac number, because 21321101301 - 2⁷ = 21321101173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21321101309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8669410 + ... + 8671868.

It is an arithmetic number, because the mean of its divisors is an integer number (918256500).

Almost surely, 2^21321101301 is an apocalyptic number.

It is an amenable number.

21321101301 is a deficient number, since it is larger than the sum of its proper divisors (8063106699).

21321101301 is a wasteful number, since it uses less digits than its factorization.

21321101301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3109.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 21321101301 its reverse (10310112312), we get a palindrome (31631213613).

The spelling of 21321101301 in words is "twenty-one billion, three hundred twenty-one million, one hundred one thousand, three hundred one".