20001332002331 has 4 divisors (see below), whose sum is σ = 20275322851752. Its totient is φ = 19727341152912.

The previous prime is 20001332002319. The next prime is 20001332002349. The reversal of 20001332002331 is 13320023310002.

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

It is a cyclic number.

It is not a de Polignac number, because 20001332002331 - 2³⁴ = 19984152133147 is a prime.

It is a super-2 number, since 2×20001332002331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20001332004331) 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 3 ways as a sum of consecutive naturals, for example, 136995424601 + ... + 136995424746.

It is an arithmetic number, because the mean of its divisors is an integer number (5068830712938).

Almost surely, 2^{20001332002331} is an apocalyptic number.

20001332002331 is a deficient number, since it is larger than the sum of its proper divisors (273990849421).

20001332002331 is an equidigital number, since it uses as much as digits as its factorization.

20001332002331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273990849420.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 20001332002331 its reverse (13320023310002), we get a palindrome (33321355312333).

The spelling of 20001332002331 in words is "twenty trillion, one billion, three hundred thirty-two million, two thousand, three hundred thirty-one".