30153221321 has 4 divisors (see below), whose sum is σ = 30327517572. Its totient is φ = 29978925072.

The previous prime is 30153221303. The next prime is 30153221327. The reversal of 30153221321 is 12312235103.

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 28700086921 + 1453134400 = 169411^2 + 38120^2 .

It is a cyclic number.

It is not a de Polignac number, because 30153221321 - 2³⁰ = 29079479497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30153221327) 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, 87147866 + ... + 87148211.

It is an arithmetic number, because the mean of its divisors is an integer number (7581879393).

Almost surely, 2^30153221321 is an apocalyptic number.

It is an amenable number.

30153221321 is a deficient number, since it is larger than the sum of its proper divisors (174296251).

30153221321 is a wasteful number, since it uses less digits than its factorization.

30153221321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174296250.

The product of its (nonzero) digits is 1080, while the sum is 23.

Adding to 30153221321 its reverse (12312235103), we get a palindrome (42465456424).

The spelling of 30153221321 in words is "thirty billion, one hundred fifty-three million, two hundred twenty-one thousand, three hundred twenty-one".