20003111023001 has 4 divisors (see below), whose sum is σ = 20692873472100. Its totient is φ = 19313348573904.

The previous prime is 20003111022959. The next prime is 20003111023043. The reversal of 20003111023001 is 10032011130002.

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

It is an interprime number because it is at equal distance from previous prime (20003111022959) and next prime (20003111023043).

It can be written as a sum of positive squares in 2 ways, for example, as 5027913774601 + 14975197248400 = 2242301^2 + 3869780^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20003111023001 is a prime.

It is a super-2 number, since 2×20003111023001² (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 (20003111020001) 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, 344881224506 + ... + 344881224563.

It is an arithmetic number, because the mean of its divisors is an integer number (5173218368025).

Almost surely, 2^{20003111023001} is an apocalyptic number.

It is an amenable number.

20003111023001 is a deficient number, since it is larger than the sum of its proper divisors (689762449099).

20003111023001 is an equidigital number, since it uses as much as digits as its factorization.

20003111023001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689762449098.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 20003111023001 its reverse (10032011130002), we get a palindrome (30035122153003).

The spelling of 20003111023001 in words is "twenty trillion, three billion, one hundred eleven million, twenty-three thousand, one".