33221143445 has 32 divisors (see below), whose sum is σ = 45725492736. Its totient is φ = 22697856000.

The previous prime is 33221143429. The next prime is 33221143447. The reversal of 33221143445 is 54434112233.

It is not a de Polignac number, because 33221143445 - 2⁴ = 33221143429 is a prime.

It is a super-2 number, since 2×33221143445² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33221143447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13608425 + ... + 13610865.

It is an arithmetic number, because the mean of its divisors is an integer number (1428921648).

Almost surely, 2^33221143445 is an apocalyptic number.

33221143445 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

33221143445 is a deficient number, since it is larger than the sum of its proper divisors (12504349291).

33221143445 is a wasteful number, since it uses less digits than its factorization.

33221143445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3701.

The product of its digits is 34560, while the sum is 32.

Adding to 33221143445 its reverse (54434112233), we get a palindrome (87655255678).

The spelling of 33221143445 in words is "thirty-three billion, two hundred twenty-one million, one hundred forty-three thousand, four hundred forty-five".