1187011483121 has 4 divisors (see below), whose sum is σ = 1187016091044. Its totient is φ = 1187006875200.

The previous prime is 1187011483117. The next prime is 1187011483139. The reversal of 1187011483121 is 1213841107811.

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

It can be written as a sum of positive squares in 2 ways, for example, as 727035896896 + 459975586225 = 852664^2 + 678215^2 .

It is a cyclic number.

It is not a de Polignac number, because 1187011483121 - 2² = 1187011483117 is a prime.

It is a super-2 number, since 2×1187011483121² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1187011483111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1893140 + ... + 2440901.

It is an arithmetic number, because the mean of its divisors is an integer number (296754022761).

Almost surely, 2^{1187011483121} is an apocalyptic number.

It is an amenable number.

1187011483121 is a deficient number, since it is larger than the sum of its proper divisors (4607923).

1187011483121 is an equidigital number, since it uses as much as digits as its factorization.

1187011483121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4607922.

The product of its (nonzero) digits is 10752, while the sum is 38.

The spelling of 1187011483121 in words is "one trillion, one hundred eighty-seven billion, eleven million, four hundred eighty-three thousand, one hundred twenty-one".