121130299991 has 2 divisors, whose sum is σ = 121130299992. Its totient is φ = 121130299990.

The previous prime is 121130299981. The next prime is 121130300063. The reversal of 121130299991 is 199992031121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121130299991 - 2¹⁴ = 121130283607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121130299931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60565149995 + 60565149996.

It is an arithmetic number, because the mean of its divisors is an integer number (60565149996).

Almost surely, 2^121130299991 is an apocalyptic number.

121130299991 is a deficient number, since it is larger than the sum of its proper divisors (1).

121130299991 is an equidigital number, since it uses as much as digits as its factorization.

121130299991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 78732, while the sum is 47.

The spelling of 121130299991 in words is "one hundred twenty-one billion, one hundred thirty million, two hundred ninety-nine thousand, nine hundred ninety-one".