30121130191 has 16 divisors (see below), whose sum is σ = 31510425600. Its totient is φ = 28758506400.

The previous prime is 30121130177. The next prime is 30121130197. The reversal of 30121130191 is 19103112103.

It is a cyclic number.

It is not a de Polignac number, because 30121130191 - 2⁹ = 30121129679 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 (30121130197) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3843465 + ... + 3851293.

It is an arithmetic number, because the mean of its divisors is an integer number (1969401600).

Almost surely, 2^30121130191 is an apocalyptic number.

30121130191 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

30121130191 is a deficient number, since it is larger than the sum of its proper divisors (1389295409).

30121130191 is a wasteful number, since it uses less digits than its factorization.

30121130191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9510.

The product of its (nonzero) digits is 162, while the sum is 22.

Adding to 30121130191 its reverse (19103112103), we get a palindrome (49224242294).

The spelling of 30121130191 in words is "thirty billion, one hundred twenty-one million, one hundred thirty thousand, one hundred ninety-one".