21023332021001 has 2 divisors, whose sum is σ = 21023332021002. Its totient is φ = 21023332021000.

The previous prime is 21023332020989. The next prime is 21023332021031. The reversal of 21023332021001 is 10012023332012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12604914115600 + 8418417905401 = 3550340^2 + 2901451^2 .

It is a cyclic number.

It is not a de Polignac number, because 21023332021001 - 2⁶ = 21023332020937 is a prime.

It is a super-2 number, since 2×21023332021001² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (21023332021031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10511666010500 + 10511666010501.

It is an arithmetic number, because the mean of its divisors is an integer number (10511666010501).

Almost surely, 2^{21023332021001} is an apocalyptic number.

It is an amenable number.

21023332021001 is a deficient number, since it is larger than the sum of its proper divisors (1).

21023332021001 is an equidigital number, since it uses as much as digits as its factorization.

21023332021001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21023332021001 its reverse (10012023332012), we get a palindrome (31035355353013).

The spelling of 21023332021001 in words is "twenty-one trillion, twenty-three billion, three hundred thirty-two million, twenty-one thousand, one".