33231121223 has 4 divisors (see below), whose sum is σ = 33259696008. Its totient is φ = 33202546440.

The previous prime is 33231121213. The next prime is 33231121249. The reversal of 33231121223 is 32212113233.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32212113233 = 22567 ⋅1427399.

It is a cyclic number.

It is not a de Polignac number, because 33231121223 - 2²⁰ = 33230072647 is a prime.

It is a super-2 number, since 2×33231121223² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33231121213) 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, 14285648 + ... + 14287973.

It is an arithmetic number, because the mean of its divisors is an integer number (8314924002).

Almost surely, 2^33231121223 is an apocalyptic number.

33231121223 is a deficient number, since it is larger than the sum of its proper divisors (28574785).

33231121223 is a wasteful number, since it uses less digits than its factorization.

33231121223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28574784.

The product of its digits is 1296, while the sum is 23.

Adding to 33231121223 its reverse (32212113233), we get a palindrome (65443234456).

The spelling of 33231121223 in words is "thirty-three billion, two hundred thirty-one million, one hundred twenty-one thousand, two hundred twenty-three".