21122321303201 has 4 divisors (see below), whose sum is σ = 21122337015600. Its totient is φ = 21122305590804.

The previous prime is 21122321303143. The next prime is 21122321303207. The reversal of 21122321303201 is 10230312322112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21122321303201 - 2¹⁰ = 21122321302177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21122321303207) 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 3 ways as a sum of consecutive naturals, for example, 5629331 + ... + 8598488.

It is an arithmetic number, because the mean of its divisors is an integer number (5280584253900).

Almost surely, 2^{21122321303201} is an apocalyptic number.

It is an amenable number.

21122321303201 is a deficient number, since it is larger than the sum of its proper divisors (15712399).

21122321303201 is a wasteful number, since it uses less digits than its factorization.

21122321303201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15712398.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 21122321303201 its reverse (10230312322112), we get a palindrome (31352633625313).

The spelling of 21122321303201 in words is "twenty-one trillion, one hundred twenty-two billion, three hundred twenty-one million, three hundred three thousand, two hundred one".