1201200001187 has 2 divisors, whose sum is σ = 1201200001188. Its totient is φ = 1201200001186.

The previous prime is 1201200001139. The next prime is 1201200001237. The reversal of 1201200001187 is 7811000021021.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201200001187 is a prime.

It is not a weakly prime, because it can be changed into another prime (1201200009187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600600000593 + 600600000594.

It is an arithmetic number, because the mean of its divisors is an integer number (600600000594).

Almost surely, 2^{1201200001187} is an apocalyptic number.

1201200001187 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201200001187 is an equidigital number, since it uses as much as digits as its factorization.

1201200001187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 23.

The spelling of 1201200001187 in words is "one trillion, two hundred one billion, two hundred million, one thousand, one hundred eighty-seven".