33221301111221 has 8 divisors (see below), whose sum is σ = 35212405589784. Its totient is φ = 31234297776640.

The previous prime is 33221301111203. The next prime is 33221301111223. The reversal of 33221301111221 is 12211110312233.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2475540358225 + 30745760752996 = 1573385^2 + 5544886^2 .

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

It is not a de Polignac number, because 33221301111221 - 2¹⁰ = 33221301110197 is a prime.

It is a super-2 number, since 2×33221301111221² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33221301111223) 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, 1025269310 + ... + 1025301711.

It is an arithmetic number, because the mean of its divisors is an integer number (4401550698723).

Almost surely, 2^{33221301111221} is an apocalyptic number.

It is an amenable number.

33221301111221 is a deficient number, since it is larger than the sum of its proper divisors (1991104478563).

33221301111221 is a wasteful number, since it uses less digits than its factorization.

33221301111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2050571991.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 33221301111221 its reverse (12211110312233), we get a palindrome (45432411423454).

The spelling of 33221301111221 in words is "thirty-three trillion, two hundred twenty-one billion, three hundred one million, one hundred eleven thousand, two hundred twenty-one".