30132122221 has 4 divisors (see below), whose sum is σ = 30150712444. Its totient is φ = 30113532000.

The previous prime is 30132122179. The next prime is 30132122257. The reversal of 30132122221 is 12222123103.

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 27138938121 + 2993184100 = 164739^2 + 54710^2 .

It is a cyclic number.

It is not a de Polignac number, because 30132122221 - 2⁹ = 30132121709 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 (30132122261) 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, 9292680 + ... + 9295921.

It is an arithmetic number, because the mean of its divisors is an integer number (7537678111).

Almost surely, 2^30132122221 is an apocalyptic number.

It is an amenable number.

30132122221 is a deficient number, since it is larger than the sum of its proper divisors (18590223).

30132122221 is a wasteful number, since it uses less digits than its factorization.

30132122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18590222.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 30132122221 its reverse (12222123103), we get a palindrome (42354245324).

The spelling of 30132122221 in words is "thirty billion, one hundred thirty-two million, one hundred twenty-two thousand, two hundred twenty-one".