30145450221 has 6 divisors (see below), whose sum is σ = 43543428110. Its totient is φ = 20096966808.

The previous prime is 30145450213. The next prime is 30145450253. The reversal of 30145450221 is 12205454103.

It can be written as a sum of positive squares in only one way, i.e., 20359294596 + 9786155625 = 142686^2 + 98925^2 .

It is not a de Polignac number, because 30145450221 - 2³ = 30145450213 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 (30145450211) 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 5 ways as a sum of consecutive naturals, for example, 1674747226 + ... + 1674747243.

Almost surely, 2^30145450221 is an apocalyptic number.

It is an amenable number.

30145450221 is a deficient number, since it is larger than the sum of its proper divisors (13397977889).

30145450221 is a wasteful number, since it uses less digits than its factorization.

30145450221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3349494475 (or 3349494472 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The spelling of 30145450221 in words is "thirty billion, one hundred forty-five million, four hundred fifty thousand, two hundred twenty-one".