1121101999987 has 2 divisors, whose sum is σ = 1121101999988. Its totient is φ = 1121101999986.

The previous prime is 1121101999907. The next prime is 1121102000047. The reversal of 1121101999987 is 7899991011211.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1121101999987 - 2¹⁹ = 1121101475699 is a prime.

It is not a weakly prime, because it can be changed into another prime (1121101999907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560550999993 + 560550999994.

It is an arithmetic number, because the mean of its divisors is an integer number (560550999994).

Almost surely, 2^{1121101999987} is an apocalyptic number.

1121101999987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121101999987 is an equidigital number, since it uses as much as digits as its factorization.

1121101999987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 734832, while the sum is 58.

The spelling of 1121101999987 in words is "one trillion, one hundred twenty-one billion, one hundred one million, nine hundred ninety-nine thousand, nine hundred eighty-seven".