30133303220 has 12 divisors (see below), whose sum is σ = 63279936804. Its totient is φ = 12053321280.

The previous prime is 30133303181. The next prime is 30133303229. The reversal of 30133303220 is 2230333103.

It can be written as a sum of positive squares in 2 ways, for example, as 15653512996 + 14479790224 = 125114^2 + 120332^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 1506665161 = 30133303220 / (3 + 0 + 1 + 3 + 3 + 3 + 0 + 3 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 30133303192 and 30133303201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30133303229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 753332561 + ... + 753332600.

It is an arithmetic number, because the mean of its divisors is an integer number (5273328067).

Almost surely, 2^30133303220 is an apocalyptic number.

It is an amenable number.

30133303220 is an abundant number, since it is smaller than the sum of its proper divisors (33146633584).

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

30133303220 is a wasteful number, since it uses less digits than its factorization.

30133303220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1506665170 (or 1506665168 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 20.

Adding to 30133303220 its reverse (2230333103), we get a palindrome (32363636323).

The spelling of 30133303220 in words is "thirty billion, one hundred thirty-three million, three hundred three thousand, two hundred twenty".