30032121121 has 4 divisors (see below), whose sum is σ = 30105549700. Its totient is φ = 29958692544.

The previous prime is 30032121109. The next prime is 30032121143. The reversal of 30032121121 is 12112123003.

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 21597535521 + 8434585600 = 146961^2 + 91840^2 .

It is a cyclic number.

It is not a de Polignac number, because 30032121121 - 2²⁷ = 29897903393 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30032121095 and 30032121104.

It is not an unprimeable number, because it can be changed into a prime (30032121191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36713676 + ... + 36714493.

It is an arithmetic number, because the mean of its divisors is an integer number (7526387425).

Almost surely, 2^30032121121 is an apocalyptic number.

It is an amenable number.

30032121121 is a deficient number, since it is larger than the sum of its proper divisors (73428579).

30032121121 is an equidigital number, since it uses as much as digits as its factorization.

30032121121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73428578.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 30032121121 its reverse (12112123003), we get a palindrome (42144244124).

The spelling of 30032121121 in words is "thirty billion, thirty-two million, one hundred twenty-one thousand, one hundred twenty-one".