33342123221 has 4 divisors (see below), whose sum is σ = 36373225344. Its totient is φ = 30311021100.

The previous prime is 33342123203. The next prime is 33342123299. The reversal of 33342123221 is 12232124333.

It is a happy number.

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 33342123221 - 2³⁴ = 16162254037 is a prime.

It is a super-2 number, since 2×33342123221² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33342120221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1515551045 + ... + 1515551066.

It is an arithmetic number, because the mean of its divisors is an integer number (9093306336).

Almost surely, 2^33342123221 is an apocalyptic number.

It is an amenable number.

33342123221 is a deficient number, since it is larger than the sum of its proper divisors (3031102123).

33342123221 is a wasteful number, since it uses less digits than its factorization.

33342123221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3031102122.

The product of its digits is 5184, while the sum is 26.

Adding to 33342123221 its reverse (12232124333), we get a palindrome (45574247554).

The spelling of 33342123221 in words is "thirty-three billion, three hundred forty-two million, one hundred twenty-three thousand, two hundred twenty-one".