30121123091 has 2 divisors, whose sum is σ = 30121123092. Its totient is φ = 30121123090.

The previous prime is 30121123079. The next prime is 30121123103. The reversal of 30121123091 is 19032112103.

It is a balanced prime because it is at equal distance from previous prime (30121123079) and next prime (30121123103).

It is a cyclic number.

It is not a de Polignac number, because 30121123091 - 2⁶ = 30121123027 is a prime.

It is not a weakly prime, because it can be changed into another prime (30121123001) 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 as a sum of consecutive naturals, namely, 15060561545 + 15060561546.

It is an arithmetic number, because the mean of its divisors is an integer number (15060561546).

Almost surely, 2^30121123091 is an apocalyptic number.

30121123091 is a deficient number, since it is larger than the sum of its proper divisors (1).

30121123091 is an equidigital number, since it uses as much as digits as its factorization.

30121123091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 23.

Adding to 30121123091 its reverse (19032112103), we get a palindrome (49153235194).

The spelling of 30121123091 in words is "thirty billion, one hundred twenty-one million, one hundred twenty-three thousand, ninety-one".