20121330322001 has 4 divisors (see below), whose sum is σ = 20141037796404. Its totient is φ = 20101622847600.

The previous prime is 20121330321977. The next prime is 20121330322007. The reversal of 20121330322001 is 10022303312102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17096165832001 + 3025164490000 = 4134751^2 + 1739300^2 .

It is a cyclic number.

It is not a de Polignac number, because 20121330322001 - 2³⁸ = 19846452415057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20121330322007) 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, 9853735670 + ... + 9853737711.

It is an arithmetic number, because the mean of its divisors is an integer number (5035259449101).

Almost surely, 2^{20121330322001} is an apocalyptic number.

It is an amenable number.

20121330322001 is a deficient number, since it is larger than the sum of its proper divisors (19707474403).

20121330322001 is a wasteful number, since it uses less digits than its factorization.

20121330322001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19707474402.

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

Adding to 20121330322001 its reverse (10022303312102), we get a palindrome (30143633634103).

The spelling of 20121330322001 in words is "twenty trillion, one hundred twenty-one billion, three hundred thirty million, three hundred twenty-two thousand, one".