10001121211187 has 2 divisors, whose sum is σ = 10001121211188. Its totient is φ = 10001121211186.

The previous prime is 10001121211139. The next prime is 10001121211247. The reversal of 10001121211187 is 78111212110001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10001121211187 - 2¹⁴ = 10001121194803 is a prime.

It is not a weakly prime, because it can be changed into another prime (10001121211687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000560605593 + 5000560605594.

It is an arithmetic number, because the mean of its divisors is an integer number (5000560605594).

Almost surely, 2^{10001121211187} is an apocalyptic number.

10001121211187 is a deficient number, since it is larger than the sum of its proper divisors (1).

10001121211187 is an equidigital number, since it uses as much as digits as its factorization.

10001121211187 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 26.

Adding to 10001121211187 its reverse (78111212110001), we get a palindrome (88112333321188).

The spelling of 10001121211187 in words is "ten trillion, one billion, one hundred twenty-one million, two hundred eleven thousand, one hundred eighty-seven".