33011122133021 has 6 divisors (see below), whose sum is σ = 33029243521950. Its totient is φ = 32993010680888.

The previous prime is 33011122133009. The next prime is 33011122133023. The reversal of 33011122133021 is 12033122111033.

It can be written as a sum of positive squares in only one way, i.e., 20887285608121 + 12123836524900 = 4570261^2 + 3481930^2 .

It is not a de Polignac number, because 33011122133021 - 2²² = 33011117938717 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 (33011122133023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1643246 + ... + 8289903.

It is an arithmetic number, because the mean of its divisors is an integer number (5504873920325).

Almost surely, 2^{33011122133021} is an apocalyptic number.

It is an amenable number.

33011122133021 is a deficient number, since it is larger than the sum of its proper divisors (18121388929).

33011122133021 is an frugal number, since it uses more digits than its factorization.

33011122133021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9936795 (or 9934972 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 33011122133021 its reverse (12033122111033), we get a palindrome (45044244244054).

The spelling of 33011122133021 in words is "thirty-three trillion, eleven billion, one hundred twenty-two million, one hundred thirty-three thousand, twenty-one".