10121230440247 has 2 divisors, whose sum is σ = 10121230440248. Its totient is φ = 10121230440246.

The previous prime is 10121230440227. The next prime is 10121230440319. The reversal of 10121230440247 is 74204403212101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10121230440247 - 2²⁷ = 10121096222519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10121230440227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5060615220123 + 5060615220124.

It is an arithmetic number, because the mean of its divisors is an integer number (5060615220124).

Almost surely, 2^{10121230440247} is an apocalyptic number.

10121230440247 is a deficient number, since it is larger than the sum of its proper divisors (1).

10121230440247 is an equidigital number, since it uses as much as digits as its factorization.

10121230440247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 31.

Adding to 10121230440247 its reverse (74204403212101), we get a palindrome (84325633652348).

The spelling of 10121230440247 in words is "ten trillion, one hundred twenty-one billion, two hundred thirty million, four hundred forty thousand, two hundred forty-seven".