1210244009987 has 4 divisors (see below), whose sum is σ = 1222720752456. Its totient is φ = 1197767267520.

The previous prime is 1210244009941. The next prime is 1210244010029. The reversal of 1210244009987 is 7899004420121.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1210244009987 - 2⁸ = 1210244009731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1210244009927) 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 3 ways as a sum of consecutive naturals, for example, 6238371089 + ... + 6238371282.

It is an arithmetic number, because the mean of its divisors is an integer number (305680188114).

Almost surely, 2^{1210244009987} is an apocalyptic number.

1210244009987 is a deficient number, since it is larger than the sum of its proper divisors (12476742469).

1210244009987 is an equidigital number, since it uses as much as digits as its factorization.

1210244009987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12476742468.

The product of its (nonzero) digits is 290304, while the sum is 47.

The spelling of 1210244009987 in words is "one trillion, two hundred ten billion, two hundred forty-four million, nine thousand, nine hundred eighty-seven".