21321233301 has 8 divisors (see below), whose sum is σ = 28528765600. Its totient is φ = 14163928272.

The previous prime is 21321233299. The next prime is 21321233309. The reversal of 21321233301 is 10333212312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21321233301 - 2¹ = 21321233299 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 (21321233309) 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 7 ways as a sum of consecutive naturals, for example, 12555826 + ... + 12557523.

It is an arithmetic number, because the mean of its divisors is an integer number (3566095700).

Almost surely, 2^21321233301 is an apocalyptic number.

It is an amenable number.

21321233301 is a deficient number, since it is larger than the sum of its proper divisors (7207532299).

21321233301 is a wasteful number, since it uses less digits than its factorization.

21321233301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25113635.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 21321233301 its reverse (10333212312), we get a palindrome (31654445613).

The spelling of 21321233301 in words is "twenty-one billion, three hundred twenty-one million, two hundred thirty-three thousand, three hundred one".