33213111223 has 4 divisors (see below), whose sum is σ = 33257813328. Its totient is φ = 33168409120.

The previous prime is 33213111179. The next prime is 33213111233. The reversal of 33213111223 is 32211131233.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33213111223 is a prime.

It is a super-2 number, since 2×33213111223² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33213111194 and 33213111203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33213111233) 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, 22349938 + ... + 22351423.

It is an arithmetic number, because the mean of its divisors is an integer number (8314453332).

Almost surely, 2^33213111223 is an apocalyptic number.

33213111223 is a deficient number, since it is larger than the sum of its proper divisors (44702105).

33213111223 is an equidigital number, since it uses as much as digits as its factorization.

33213111223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44702104.

The product of its digits is 648, while the sum is 22.

Adding to 33213111223 its reverse (32211131233), we get a palindrome (65424242456).

The spelling of 33213111223 in words is "thirty-three billion, two hundred thirteen million, one hundred eleven thousand, two hundred twenty-three".