33112312122221 has 8 divisors (see below), whose sum is σ = 35327729505024. Its totient is φ = 30926631885760.

The previous prime is 33112312122193. The next prime is 33112312122223. The reversal of 33112312122221 is 12222121321133.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 33112312122221 - 2²⁶ = 33112245013357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33112312122223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7434284285 + ... + 7434288738.

It is an arithmetic number, because the mean of its divisors is an integer number (4415966188128).

Almost surely, 2^{33112312122221} is an apocalyptic number.

It is an amenable number.

33112312122221 is a deficient number, since it is larger than the sum of its proper divisors (2215417382803).

33112312122221 is a wasteful number, since it uses less digits than its factorization.

33112312122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14868573171.

The product of its digits is 1728, while the sum is 26.

Adding to 33112312122221 its reverse (12222121321133), we get a palindrome (45334433443354).

The spelling of 33112312122221 in words is "thirty-three trillion, one hundred twelve billion, three hundred twelve million, one hundred twenty-two thousand, two hundred twenty-one".