33001201221320 has 16 divisors (see below), whose sum is σ = 74252702748060. Its totient is φ = 13200480488512.

The previous prime is 33001201221319. The next prime is 33001201221323. The reversal of 33001201221320 is 2312210210033.

It can be written as a sum of positive squares in 2 ways, for example, as 32771892406276 + 229308815044 = 5724674^2 + 478862^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 33001201221292 and 33001201221301.

It is not an unprimeable number, because it can be changed into a prime (33001201221323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 412515015227 + ... + 412515015306.

Almost surely, 2^{33001201221320} is an apocalyptic number.

It is an amenable number.

33001201221320 is an abundant number, since it is smaller than the sum of its proper divisors (41251501526740).

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

33001201221320 is a wasteful number, since it uses less digits than its factorization.

33001201221320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 825030030544 (or 825030030540 counting only the distinct ones).

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

Adding to 33001201221320 its reverse (2312210210033), we get a palindrome (35313411431353).

The spelling of 33001201221320 in words is "thirty-three trillion, one billion, two hundred one million, two hundred twenty-one thousand, three hundred twenty".