1121099999959 has 2 divisors, whose sum is σ = 1121099999960. Its totient is φ = 1121099999958.

The previous prime is 1121099999953. The next prime is 1121100000029. The reversal of 1121099999959 is 9599999901211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1121099999959 - 2¹¹ = 1121099997911 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1121099999891 and 1121099999900.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121099999953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560549999979 + 560549999980.

It is an arithmetic number, because the mean of its divisors is an integer number (560549999980).

Almost surely, 2^{1121099999959} is an apocalyptic number.

1121099999959 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121099999959 is an equidigital number, since it uses as much as digits as its factorization.

1121099999959 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47829690, while the sum is 73.

The spelling of 1121099999959 in words is "one trillion, one hundred twenty-one billion, ninety-nine million, nine hundred ninety-nine thousand, nine hundred fifty-nine".