20000133331 has 4 divisors (see below), whose sum is σ = 20007364192. Its totient is φ = 19992902472.

The previous prime is 20000133319. The next prime is 20000133337. The reversal of 20000133331 is 13333100002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13333100002 = 2 ⋅6666550001.

It is a cyclic number.

It is not a de Polignac number, because 20000133331 - 2¹⁵ = 20000100563 is a prime.

It is a super-2 number, since 2×20000133331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20000133337) 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, 3611280 + ... + 3616813.

It is an arithmetic number, because the mean of its divisors is an integer number (5001841048).

Almost surely, 2^20000133331 is an apocalyptic number.

20000133331 is a deficient number, since it is larger than the sum of its proper divisors (7230861).

20000133331 is an equidigital number, since it uses as much as digits as its factorization.

20000133331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7230860.

The product of its (nonzero) digits is 162, while the sum is 16.

Adding to 20000133331 its reverse (13333100002), we get a palindrome (33333233333).

It can be divided in two parts, 200001 and 33331, that added together give a palindrome (233332).

The spelling of 20000133331 in words is "twenty billion, one hundred thirty-three thousand, three hundred thirty-one".