30033221020 has 72 divisors (see below), whose sum is σ = 73088865360. Its totient is φ = 10278727680.

The previous prime is 30033220993. The next prime is 30033221027. The reversal of 30033221020 is 2012233003.

It is a junction number, because it is equal to n+sod(n) for n = 30033220985 and 30033221003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30033221027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 172605 + ... + 299764.

It is an arithmetic number, because the mean of its divisors is an integer number (1015123130).

Almost surely, 2^30033221020 is an apocalyptic number.

It is an amenable number.

30033221020 is an abundant number, since it is smaller than the sum of its proper divisors (43055644340).

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

30033221020 is a wasteful number, since it uses less digits than its factorization.

30033221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472423 (or 472404 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 30033221020 its reverse (2012233003), we get a palindrome (32045454023).

The spelling of 30033221020 in words is "thirty billion, thirty-three million, two hundred twenty-one thousand, twenty".