11011120987 has 2 divisors, whose sum is σ = 11011120988. Its totient is φ = 11011120986.

The previous prime is 11011120933. The next prime is 11011120997. The reversal of 11011120987 is 78902111011.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11011120987 - 2¹⁵ = 11011088219 is a prime.

It is not a weakly prime, because it can be changed into another prime (11011120927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5505560493 + 5505560494.

It is an arithmetic number, because the mean of its divisors is an integer number (5505560494).

Almost surely, 2^11011120987 is an apocalyptic number.

11011120987 is a deficient number, since it is larger than the sum of its proper divisors (1).

11011120987 is an equidigital number, since it uses as much as digits as its factorization.

11011120987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 31.

Adding to 11011120987 its reverse (78902111011), we get a palindrome (89913231998).

The spelling of 11011120987 in words is "eleven billion, eleven million, one hundred twenty thousand, nine hundred eighty-seven".