30221311220 has 48 divisors (see below), whose sum is σ = 65718172800. Its totient is φ = 11660127360.

The previous prime is 30221311181. The next prime is 30221311223. The reversal of 30221311220 is 2211312203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30221311223) 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 15 ways as a sum of consecutive naturals, for example, 572711 + ... + 623249.

It is an arithmetic number, because the mean of its divisors is an integer number (1369128600).

Almost surely, 2^30221311220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30221311220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32859086400).

30221311220 is an abundant number, since it is smaller than the sum of its proper divisors (35496861580).

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

30221311220 is a wasteful number, since it uses less digits than its factorization.

30221311220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51608 (or 51606 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 30221311220 its reverse (2211312203), we get a palindrome (32432623423).

The spelling of 30221311220 in words is "thirty billion, two hundred twenty-one million, three hundred eleven thousand, two hundred twenty".