33221012231 has 16 divisors (see below), whose sum is σ = 37262163456. Its totient is φ = 29355480000.

The previous prime is 33221012183. The next prime is 33221012243. The reversal of 33221012231 is 13221012233.

It is a de Polignac number, because none of the positive numbers 2^k-33221012231 is a prime.

It is a super-2 number, since 2×33221012231² (a number of 22 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 (33221012131) 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 15 ways as a sum of consecutive naturals, for example, 13685 + ... + 258126.

It is an arithmetic number, because the mean of its divisors is an integer number (2328885216).

Almost surely, 2^33221012231 is an apocalyptic number.

33221012231 is a deficient number, since it is larger than the sum of its proper divisors (4041151225).

33221012231 is a wasteful number, since it uses less digits than its factorization.

33221012231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272134.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 33221012231 its reverse (13221012233), we get a palindrome (46442024464).

The spelling of 33221012231 in words is "thirty-three billion, two hundred twenty-one million, twelve thousand, two hundred thirty-one".