20001102331 has 4 divisors (see below), whose sum is σ = 22858402672. Its totient is φ = 17143801992.

The previous prime is 20001102313. The next prime is 20001102347. The reversal of 20001102331 is 13320110002.

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 20001102331 - 2¹¹ = 20001100283 is a prime.

It is a super-2 number, since 2×20001102331² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20001102301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1428650160 + ... + 1428650173.

It is an arithmetic number, because the mean of its divisors is an integer number (5714600668).

Almost surely, 2^20001102331 is an apocalyptic number.

20001102331 is a deficient number, since it is larger than the sum of its proper divisors (2857300341).

20001102331 is an equidigital number, since it uses as much as digits as its factorization.

20001102331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2857300340.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 20001102331 its reverse (13320110002), we get a palindrome (33321212333).

The spelling of 20001102331 in words is "twenty billion, one million, one hundred two thousand, three hundred thirty-one".