1240522245013 has 2 divisors, whose sum is σ = 1240522245014. Its totient is φ = 1240522245012.

The previous prime is 1240522244939. The next prime is 1240522245023. The reversal of 1240522245013 is 3105422250421.

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., 1222366838449 + 18155406564 = 1105607^2 + 134742^2 .

It is a cyclic number.

It is not a de Polignac number, because 1240522245013 - 2²¹ = 1240520147861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1240522245023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620261122506 + 620261122507.

It is an arithmetic number, because the mean of its divisors is an integer number (620261122507).

Almost surely, 2^{1240522245013} is an apocalyptic number.

It is an amenable number.

1240522245013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240522245013 is an equidigital number, since it uses as much as digits as its factorization.

1240522245013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 1240522245013 its reverse (3105422250421), we get a palindrome (4345944495434).

The spelling of 1240522245013 in words is "one trillion, two hundred forty billion, five hundred twenty-two million, two hundred forty-five thousand, thirteen".