1242320305111 has 2 divisors, whose sum is σ = 1242320305112. Its totient is φ = 1242320305110.

The previous prime is 1242320305027. The next prime is 1242320305201. The reversal of 1242320305111 is 1115030232421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1242320305111 - 2³³ = 1233730370519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1242320305511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621160152555 + 621160152556.

It is an arithmetic number, because the mean of its divisors is an integer number (621160152556).

Almost surely, 2^{1242320305111} is an apocalyptic number.

1242320305111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242320305111 is an equidigital number, since it uses as much as digits as its factorization.

1242320305111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 1242320305111 its reverse (1115030232421), we get a palindrome (2357350537532).

The spelling of 1242320305111 in words is "one trillion, two hundred forty-two billion, three hundred twenty million, three hundred five thousand, one hundred eleven".