121032999991 has 2 divisors, whose sum is σ = 121032999992. Its totient is φ = 121032999990.

The previous prime is 121032999953. The next prime is 121033000051. The reversal of 121032999991 is 199999230121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121032999991 - 2¹⁹ = 121032475703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121032991991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60516499995 + 60516499996.

It is an arithmetic number, because the mean of its divisors is an integer number (60516499996).

Almost surely, 2^121032999991 is an apocalyptic number.

121032999991 is a deficient number, since it is larger than the sum of its proper divisors (1).

121032999991 is an equidigital number, since it uses as much as digits as its factorization.

121032999991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 708588, while the sum is 55.

The spelling of 121032999991 in words is "one hundred twenty-one billion, thirty-two million, nine hundred ninety-nine thousand, nine hundred ninety-one".