33212222321 has 16 divisors (see below), whose sum is σ = 33986189328. Its totient is φ = 32446137600.

The previous prime is 33212222311. The next prime is 33212222359. The reversal of 33212222321 is 12322221233.

It can be written as a sum of positive squares in 8 ways, for example, as 22721341696 + 10490880625 = 150736^2 + 102425^2 .

It is a cyclic number.

It is not a de Polignac number, because 33212222321 - 2⁶ = 33212222257 is a prime.

It is a super-2 number, since 2×33212222321² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33212222311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12331451 + ... + 12334143.

It is an arithmetic number, because the mean of its divisors is an integer number (2124136833).

Almost surely, 2^33212222321 is an apocalyptic number.

It is an amenable number.

33212222321 is a deficient number, since it is larger than the sum of its proper divisors (773967007).

33212222321 is a wasteful number, since it uses less digits than its factorization.

33212222321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4052.

The product of its digits is 1728, while the sum is 23.

Adding to 33212222321 its reverse (12322221233), we get a palindrome (45534443554).

The spelling of 33212222321 in words is "thirty-three billion, two hundred twelve million, two hundred twenty-two thousand, three hundred twenty-one".