1201011211187 has 2 divisors, whose sum is σ = 1201011211188. Its totient is φ = 1201011211186.

The previous prime is 1201011211111. The next prime is 1201011211189. The reversal of 1201011211187 is 7811121101021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1201011211187 - 2¹² = 1201011207091 is a prime.

Together with 1201011211189, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1201011211189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600505605593 + 600505605594.

It is an arithmetic number, because the mean of its divisors is an integer number (600505605594).

Almost surely, 2^{1201011211187} is an apocalyptic number.

1201011211187 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201011211187 is an equidigital number, since it uses as much as digits as its factorization.

1201011211187 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.

The spelling of 1201011211187 in words is "one trillion, two hundred one billion, eleven million, two hundred eleven thousand, one hundred eighty-seven".