1010121200191 has 2 divisors, whose sum is σ = 1010121200192. Its totient is φ = 1010121200190.

The previous prime is 1010121200119. The next prime is 1010121200201. The reversal of 1010121200191 is 1910021210101.

Together with previous prime (1010121200119) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1010121200191 - 2⁷ = 1010121200063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1010121200111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505060600095 + 505060600096.

It is an arithmetic number, because the mean of its divisors is an integer number (505060600096).

Almost surely, 2^{1010121200191} is an apocalyptic number.

1010121200191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1010121200191 is an equidigital number, since it uses as much as digits as its factorization.

1010121200191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 19.

Adding to 1010121200191 its reverse (1910021210101), we get a palindrome (2920142410292).

The spelling of 1010121200191 in words is "one trillion, ten billion, one hundred twenty-one million, two hundred thousand, one hundred ninety-one".