20123231022133 has 4 divisors (see below), whose sum is σ = 20134269548928. Its totient is φ = 20112192495340.

The previous prime is 20123231022119. The next prime is 20123231022163. The reversal of 20123231022133 is 33122013232102.

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 a de Polignac number, because none of the positive numbers 2^k-20123231022133 is a prime.

It is a super-3 number, since 3×20123231022133³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20123231022098 and 20123231022107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123231022163) 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, 5519260663 + ... + 5519264308.

It is an arithmetic number, because the mean of its divisors is an integer number (5033567387232).

Almost surely, 2^{20123231022133} is an apocalyptic number.

It is an amenable number.

20123231022133 is a deficient number, since it is larger than the sum of its proper divisors (11038526795).

20123231022133 is a wasteful number, since it uses less digits than its factorization.

20123231022133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11038526794.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 20123231022133 its reverse (33122013232102), we get a palindrome (53245244254235).

The spelling of 20123231022133 in words is "twenty trillion, one hundred twenty-three billion, two hundred thirty-one million, twenty-two thousand, one hundred thirty-three".