1240112217013 has 2 divisors, whose sum is σ = 1240112217014. Its totient is φ = 1240112217012.

The previous prime is 1240112216983. The next prime is 1240112217023. The reversal of 1240112217013 is 3107122110421.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 930640301809 + 309471915204 = 964697^2 + 556302^2 .

It is a cyclic number.

It is not a de Polignac number, because 1240112217013 - 2²¹ = 1240110119861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1240112217023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620056108506 + 620056108507.

It is an arithmetic number, because the mean of its divisors is an integer number (620056108507).

Almost surely, 2^{1240112217013} is an apocalyptic number.

It is an amenable number.

1240112217013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240112217013 is an equidigital number, since it uses as much as digits as its factorization.

1240112217013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 25.

Adding to 1240112217013 its reverse (3107122110421), we get a palindrome (4347234327434).

The spelling of 1240112217013 in words is "one trillion, two hundred forty billion, one hundred twelve million, two hundred seventeen thousand, thirteen".