11111210012087 has 2 divisors, whose sum is σ = 11111210012088. Its totient is φ = 11111210012086.

The previous prime is 11111210012083. The next prime is 11111210012153. The reversal of 11111210012087 is 78021001211111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11111210012087 - 2² = 11111210012083 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11111210012083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555605006043 + 5555605006044.

It is an arithmetic number, because the mean of its divisors is an integer number (5555605006044).

Almost surely, 2^{11111210012087} is an apocalyptic number.

11111210012087 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111210012087 is an equidigital number, since it uses as much as digits as its factorization.

11111210012087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 26.

Adding to 11111210012087 its reverse (78021001211111), we get a palindrome (89132211223198).

The spelling of 11111210012087 in words is "eleven trillion, one hundred eleven billion, two hundred ten million, twelve thousand, eighty-seven".