20123133012233 has 4 divisors (see below), whose sum is σ = 20406557420928. Its totient is φ = 19839708603540.

The previous prime is 20123133012167. The next prime is 20123133012313. The reversal of 20123133012233 is 33221033132102.

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 20123133012233 - 2²² = 20123128817929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20123133012133) 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, 141712204241 + ... + 141712204382.

It is an arithmetic number, because the mean of its divisors is an integer number (5101639355232).

Almost surely, 2^{20123133012233} is an apocalyptic number.

It is an amenable number.

20123133012233 is a deficient number, since it is larger than the sum of its proper divisors (283424408695).

20123133012233 is an equidigital number, since it uses as much as digits as its factorization.

20123133012233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283424408694.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 20123133012233 its reverse (33221033132102), we get a palindrome (53344166144335).

The spelling of 20123133012233 in words is "twenty trillion, one hundred twenty-three billion, one hundred thirty-three million, twelve thousand, two hundred thirty-three".