1186484101921 has 2 divisors, whose sum is σ = 1186484101922. Its totient is φ = 1186484101920.

The previous prime is 1186484101843. The next prime is 1186484101949. The reversal of 1186484101921 is 1291014846811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 647670848400 + 538813253521 = 804780^2 + 734039^2 .

It is an emirp because it is prime and its reverse (1291014846811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1186484101921 - 2³¹ = 1184336618273 is a prime.

It is a super-2 number, since 2×1186484101921² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1186484101981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 593242050960 + 593242050961.

It is an arithmetic number, because the mean of its divisors is an integer number (593242050961).

Almost surely, 2^{1186484101921} is an apocalyptic number.

It is an amenable number.

1186484101921 is a deficient number, since it is larger than the sum of its proper divisors (1).

1186484101921 is an equidigital number, since it uses as much as digits as its factorization.

1186484101921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 110592, while the sum is 46.

The spelling of 1186484101921 in words is "one trillion, one hundred eighty-six billion, four hundred eighty-four million, one hundred one thousand, nine hundred twenty-one".