1213051582987 has 2 divisors, whose sum is σ = 1213051582988. Its totient is φ = 1213051582986.

The previous prime is 1213051582957. The next prime is 1213051583069. The reversal of 1213051582987 is 7892851503121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1213051582987 - 2¹⁹ = 1213051058699 is a prime.

It is not a weakly prime, because it can be changed into another prime (1213051582927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606525791493 + 606525791494.

It is an arithmetic number, because the mean of its divisors is an integer number (606525791494).

Almost surely, 2^{1213051582987} is an apocalyptic number.

1213051582987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213051582987 is an equidigital number, since it uses as much as digits as its factorization.

1213051582987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1209600, while the sum is 52.

The spelling of 1213051582987 in words is "one trillion, two hundred thirteen billion, fifty-one million, five hundred eighty-two thousand, nine hundred eighty-seven".