1110121387 has 2 divisors, whose sum is σ = 1110121388. Its totient is φ = 1110121386.

The previous prime is 1110121373. The next prime is 1110121457. The reversal of 1110121387 is 7831210111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1110121387 - 2¹⁵ = 1110088619 is a prime.

It is not a weakly prime, because it can be changed into another prime (1110121307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555060693 + 555060694.

It is an arithmetic number, because the mean of its divisors is an integer number (555060694).

Almost surely, 2^1110121387 is an apocalyptic number.

1110121387 is a deficient number, since it is larger than the sum of its proper divisors (1).

1110121387 is an equidigital number, since it uses as much as digits as its factorization.

1110121387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 25.

The square root of 1110121387 is about 33318.4841641993. The cubic root of 1110121387 is about 1035.4365470020.

Adding to 1110121387 its reverse (7831210111), we get a palindrome (8941331498).

The spelling of 1110121387 in words is "one billion, one hundred ten million, one hundred twenty-one thousand, three hundred eighty-seven".