33221202020 has 24 divisors (see below), whose sum is σ = 71466099768. Its totient is φ = 12964371200.

The previous prime is 33221202019. The next prime is 33221202121. The reversal of 33221202020 is 2020212233.

It can be written as a sum of positive squares in 4 ways, for example, as 1036324 + 33220165696 = 1018^2 + 182264^2 .

It is a super-2 number, since 2×33221202020² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33221202020.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20256011 + ... + 20257650.

It is an arithmetic number, because the mean of its divisors is an integer number (2977754157).

Almost surely, 2^33221202020 is an apocalyptic number.

It is an amenable number.

33221202020 is an abundant number, since it is smaller than the sum of its proper divisors (38244897748).

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

33221202020 is a wasteful number, since it uses less digits than its factorization.

33221202020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40513711 (or 40513709 counting only the distinct ones).

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

Adding to 33221202020 its reverse (2020212233), we get a palindrome (35241414253).

The spelling of 33221202020 in words is "thirty-three billion, two hundred twenty-one million, two hundred two thousand, twenty".