10121230440091 has 2 divisors, whose sum is σ = 10121230440092. Its totient is φ = 10121230440090.

The previous prime is 10121230440059. The next prime is 10121230440103. The reversal of 10121230440091 is 19004403212101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10121230440091 - 2⁵ = 10121230440059 is a prime.

It is not a weakly prime, because it can be changed into another prime (10121230440011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5060615220045 + 5060615220046.

It is an arithmetic number, because the mean of its divisors is an integer number (5060615220046).

Almost surely, 2^{10121230440091} is an apocalyptic number.

10121230440091 is a deficient number, since it is larger than the sum of its proper divisors (1).

10121230440091 is an equidigital number, since it uses as much as digits as its factorization.

10121230440091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 28.

Adding to 10121230440091 its reverse (19004403212101), we get a palindrome (29125633652192).

The spelling of 10121230440091 in words is "ten trillion, one hundred twenty-one billion, two hundred thirty million, four hundred forty thousand, ninety-one".