33222001220 has 24 divisors (see below), whose sum is σ = 73438108800. Its totient is φ = 12589389792.

The previous prime is 33222001187. The next prime is 33222001223. The reversal of 33222001220 is 2210022233.

It is a super-2 number, since 2×33222001220² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33222001223) 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 7 ways as a sum of consecutive naturals, for example, 43712780 + ... + 43713539.

It is an arithmetic number, because the mean of its divisors is an integer number (3059921200).

Almost surely, 2^33222001220 is an apocalyptic number.

It is an amenable number.

33222001220 is an abundant number, since it is smaller than the sum of its proper divisors (40216107580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33222001220 is a wasteful number, since it uses less digits than its factorization.

33222001220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87426347 (or 87426345 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 33222001220 its reverse (2210022233), we get a palindrome (35432023453).

The spelling of 33222001220 in words is "thirty-three billion, two hundred twenty-two million, one thousand, two hundred twenty".