21332220321001 has 4 divisors (see below), whose sum is σ = 21346338271104. Its totient is φ = 21318102370900.

The previous prime is 21332220320947. The next prime is 21332220321011. The reversal of 21332220321001 is 10012302223312.

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 21332220321001 - 2⁴¹ = 19133197065449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21332220321011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7058972785 + ... + 7058975806.

It is an arithmetic number, because the mean of its divisors is an integer number (5336584567776).

Almost surely, 2^{21332220321001} is an apocalyptic number.

It is an amenable number.

21332220321001 is a deficient number, since it is larger than the sum of its proper divisors (14117950103).

21332220321001 is a wasteful number, since it uses less digits than its factorization.

21332220321001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14117950102.

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

Adding to 21332220321001 its reverse (10012302223312), we get a palindrome (31344522544313).

The spelling of 21332220321001 in words is "twenty-one trillion, three hundred thirty-two billion, two hundred twenty million, three hundred twenty-one thousand, one".