30002003221 has 4 divisors (see below), whose sum is σ = 30050629452. Its totient is φ = 29953376992.

The previous prime is 30002003191. The next prime is 30002003233. The reversal of 30002003221 is 12230020003.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12743926321 + 17258076900 = 112889^2 + 131370^2 .

It is a cyclic number.

It is not a de Polignac number, because 30002003221 - 2¹¹ = 30002001173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30002000221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24312190 + ... + 24313423.

It is an arithmetic number, because the mean of its divisors is an integer number (7512657363).

Almost surely, 2^30002003221 is an apocalyptic number.

It is an amenable number.

30002003221 is a deficient number, since it is larger than the sum of its proper divisors (48626231).

30002003221 is an equidigital number, since it uses as much as digits as its factorization.

30002003221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48626230.

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 30002003221 its reverse (12230020003), we get a palindrome (42232023224).

The spelling of 30002003221 in words is "thirty billion, two million, three thousand, two hundred twenty-one".