121123032991 has 2 divisors, whose sum is σ = 121123032992. Its totient is φ = 121123032990.

The previous prime is 121123032977. The next prime is 121123033013. The reversal of 121123032991 is 199230321121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121123032991 - 2¹¹ = 121123030943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121123032391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60561516495 + 60561516496.

It is an arithmetic number, because the mean of its divisors is an integer number (60561516496).

Almost surely, 2^121123032991 is an apocalyptic number.

121123032991 is a deficient number, since it is larger than the sum of its proper divisors (1).

121123032991 is an equidigital number, since it uses as much as digits as its factorization.

121123032991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 34.

The spelling of 121123032991 in words is "one hundred twenty-one billion, one hundred twenty-three million, thirty-two thousand, nine hundred ninety-one".