1211031212087 has 2 divisors, whose sum is σ = 1211031212088. Its totient is φ = 1211031212086.

The previous prime is 1211031212081. The next prime is 1211031212113. The reversal of 1211031212087 is 7802121301121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1211031212087 - 2¹⁰ = 1211031211063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211031212081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605515606043 + 605515606044.

It is an arithmetic number, because the mean of its divisors is an integer number (605515606044).

Almost surely, 2^{1211031212087} is an apocalyptic number.

1211031212087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211031212087 is an equidigital number, since it uses as much as digits as its factorization.

1211031212087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 29.

The spelling of 1211031212087 in words is "one trillion, two hundred eleven billion, thirty-one million, two hundred twelve thousand, eighty-seven".