1200116251 has 12 divisors (see below), whose sum is σ = 1245836592. Its totient is φ = 1156021664.

The previous prime is 1200116249. The next prime is 1200116293. The reversal of 1200116251 is 1526110021.

It is not a de Polignac number, because 1200116251 - 2¹ = 1200116249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200116231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 421605 + ... + 424441.

It is an arithmetic number, because the mean of its divisors is an integer number (103819716).

Almost surely, 2^1200116251 is an apocalyptic number.

1200116251 is a deficient number, since it is larger than the sum of its proper divisors (45720341).

1200116251 is an equidigital number, since it uses as much as digits as its factorization.

1200116251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3398 (or 3369 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 1200116251 is about 34642.6940493952. The cubic root of 1200116251 is about 1062.6928833860.

Adding to 1200116251 its reverse (1526110021), we get a palindrome (2726226272).

The spelling of 1200116251 in words is "one billion, two hundred million, one hundred sixteen thousand, two hundred fifty-one".