33221640331 has 12 divisors (see below), whose sum is σ = 36658469736. Its totient is φ = 30083947520.

The previous prime is 33221640301. The next prime is 33221640337. The reversal of 33221640331 is 13304612233.

It is a de Polignac number, because none of the positive numbers 2^k-33221640331 is a prime.

It is a super-2 number, since 2×33221640331² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 33221640331.

It is not an unprimeable number, because it can be changed into a prime (33221640337) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 503065 + ... + 565258.

It is an arithmetic number, because the mean of its divisors is an integer number (3054872478).

Almost surely, 2^33221640331 is an apocalyptic number.

33221640331 is a deficient number, since it is larger than the sum of its proper divisors (3436829405).

33221640331 is a wasteful number, since it uses less digits than its factorization.

33221640331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1068602 (or 1068591 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 28.

The spelling of 33221640331 in words is "thirty-three billion, two hundred twenty-one million, six hundred forty thousand, three hundred thirty-one".