1210119985 has 4 divisors (see below), whose sum is σ = 1452143988. Its totient is φ = 968095984.

The previous prime is 1210119979. The next prime is 1210119991. The reversal of 1210119985 is 5899110121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5899110121 = 3559 ⋅1657519.

It is an interprime number because it is at equal distance from previous prime (1210119979) and next prime (1210119991).

It can be written as a sum of positive squares in 2 ways, for example, as 846111744 + 364008241 = 29088^2 + 19079^2 .

It is a cyclic number.

It is not a de Polignac number, because 1210119985 - 2⁹ = 1210119473 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 121011994 + ... + 121012003.

It is an arithmetic number, because the mean of its divisors is an integer number (363035997).

Almost surely, 2^1210119985 is an apocalyptic number.

It is an amenable number.

1210119985 is a deficient number, since it is larger than the sum of its proper divisors (242024003).

1210119985 is an equidigital number, since it uses as much as digits as its factorization.

1210119985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242024002.

The product of its (nonzero) digits is 6480, while the sum is 37.

The square root of 1210119985 is about 34786.7788822133. The cubic root of 1210119985 is about 1065.6374577194.

The spelling of 1210119985 in words is "one billion, two hundred ten million, one hundred nineteen thousand, nine hundred eighty-five".