20112432133 has 4 divisors (see below), whose sum is σ = 20986885728. Its totient is φ = 19237978540.

The previous prime is 20112432127. The next prime is 20112432161. The reversal of 20112432133 is 33123421102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20112432133 - 2⁵ = 20112432101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112439133) 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, 437226763 + ... + 437226808.

It is an arithmetic number, because the mean of its divisors is an integer number (5246721432).

Almost surely, 2^20112432133 is an apocalyptic number.

20112432133 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20112432133 is a deficient number, since it is larger than the sum of its proper divisors (874453595).

20112432133 is an equidigital number, since it uses as much as digits as its factorization.

20112432133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874453594.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 20112432133 its reverse (33123421102), we get a palindrome (53235853235).

The spelling of 20112432133 in words is "twenty billion, one hundred twelve million, four hundred thirty-two thousand, one hundred thirty-three".