1000012099987 has 2 divisors, whose sum is σ = 1000012099988. Its totient is φ = 1000012099986.

The previous prime is 1000012099927. The next prime is 1000012099997. The reversal of 1000012099987 is 7899902100001.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1000012099987 - 2⁷ = 1000012099859 is a prime.

It is not a weakly prime, because it can be changed into another prime (1000012099927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500006049993 + 500006049994.

It is an arithmetic number, because the mean of its divisors is an integer number (500006049994).

Almost surely, 2^{1000012099987} is an apocalyptic number.

1000012099987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000012099987 is an equidigital number, since it uses as much as digits as its factorization.

1000012099987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 46.

Adding to 1000012099987 its reverse (7899902100001), we get a palindrome (8899914199988).

The spelling of 1000012099987 in words is "one trillion, twelve million, ninety-nine thousand, nine hundred eighty-seven".