30221321000 has 128 divisors (see below), whose sum is σ = 76915107360. Its totient is φ = 11047680000.

The previous prime is 30221320991. The next prime is 30221321003. The reversal of 30221321000 is 12312203.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 304083844 + 29917237156 = 17438^2 + 172966^2 .

It is not an unprimeable number, because it can be changed into a prime (30221321003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1301492 + ... + 1324508.

Almost surely, 2^30221321000 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 30221321000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38457553680).

30221321000 is an abundant number, since it is smaller than the sum of its proper divisors (46693786360).

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

30221321000 is a wasteful number, since it uses less digits than its factorization.

30221321000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23152 (or 23138 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 30221321000 its reverse (12312203), we get a palindrome (30233633203).

The spelling of 30221321000 in words is "thirty billion, two hundred twenty-one million, three hundred twenty-one thousand".