21323122122001 has 4 divisors (see below), whose sum is σ = 24369282425152. Its totient is φ = 18276961818852.

The previous prime is 21323122121971. The next prime is 21323122122031. The reversal of 21323122122001 is 10022122132312.

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 an interprime number because it is at equal distance from previous prime (21323122121971) and next prime (21323122122031).

It is a cyclic number.

It is not a de Polignac number, because 21323122122001 - 2⁹ = 21323122121489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21323122122031) 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, 1523080151565 + ... + 1523080151578.

It is an arithmetic number, because the mean of its divisors is an integer number (6092320606288).

Almost surely, 2^{21323122122001} is an apocalyptic number.

It is an amenable number.

21323122122001 is a deficient number, since it is larger than the sum of its proper divisors (3046160303151).

21323122122001 is an equidigital number, since it uses as much as digits as its factorization.

21323122122001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3046160303150.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 21323122122001 its reverse (10022122132312), we get a palindrome (31345244254313).

The spelling of 21323122122001 in words is "twenty-one trillion, three hundred twenty-three billion, one hundred twenty-two million, one hundred twenty-two thousand, one".