33321013220 has 24 divisors (see below), whose sum is σ = 76335412608. Its totient is φ = 12116732000.

The previous prime is 33321013211. The next prime is 33321013237. The reversal of 33321013220 is 2231012333.

It is a super-2 number, since 2×33321013220² (a number of 22 digits) contains 22 as substring.

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 = 33321013192 and 33321013201.

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, 75729356 + ... + 75729795.

It is an arithmetic number, because the mean of its divisors is an integer number (3180642192).

Almost surely, 2^33321013220 is an apocalyptic number.

It is an amenable number.

33321013220 is an abundant number, since it is smaller than the sum of its proper divisors (43014399388).

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

33321013220 is a wasteful number, since it uses less digits than its factorization.

33321013220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151459171 (or 151459169 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 33321013220 its reverse (2231012333), we get a palindrome (35552025553).

The spelling of 33321013220 in words is "thirty-three billion, three hundred twenty-one million, thirteen thousand, two hundred twenty".