33220311233 has 4 divisors (see below), whose sum is σ = 34291934208. Its totient is φ = 32148688260.

The previous prime is 33220311203. The next prime is 33220311253. The reversal of 33220311233 is 33211302233.

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 not a de Polignac number, because 33220311233 - 2¹² = 33220307137 is a prime.

It is a super-2 number, since 2×33220311233² (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 = 33220311199 and 33220311208.

It is not an unprimeable number, because it can be changed into a prime (33220311203) 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, 535811441 + ... + 535811502.

It is an arithmetic number, because the mean of its divisors is an integer number (8572983552).

Almost surely, 2^33220311233 is an apocalyptic number.

It is an amenable number.

33220311233 is a deficient number, since it is larger than the sum of its proper divisors (1071622975).

33220311233 is a wasteful number, since it uses less digits than its factorization.

33220311233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071622974.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 33220311233 its reverse (33211302233), we get a palindrome (66431613466).

The spelling of 33220311233 in words is "thirty-three billion, two hundred twenty million, three hundred eleven thousand, two hundred thirty-three".