21133311321001 has 8 divisors (see below), whose sum is σ = 23054563026144. Its totient is φ = 19212066546720.

The previous prime is 21133311320993. The next prime is 21133311321043. The reversal of 21133311321001 is 10012311333112.

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

It is a cyclic number.

It is not a de Polignac number, because 21133311321001 - 2³ = 21133311320993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21133311324001) 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 7 ways as a sum of consecutive naturals, for example, 6236365 + ... + 9008821.

It is an arithmetic number, because the mean of its divisors is an integer number (2881820378268).

Almost surely, 2^{21133311321001} is an apocalyptic number.

It is an amenable number.

21133311321001 is a deficient number, since it is larger than the sum of its proper divisors (1921251705143).

21133311321001 is a wasteful number, since it uses less digits than its factorization.

21133311321001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3465431.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 21133311321001 its reverse (10012311333112), we get a palindrome (31145622654113).

The spelling of 21133311321001 in words is "twenty-one trillion, one hundred thirty-three billion, three hundred eleven million, three hundred twenty-one thousand, one".