1211342430043 has 2 divisors, whose sum is σ = 1211342430044. Its totient is φ = 1211342430042.

The previous prime is 1211342430031. The next prime is 1211342430059. The reversal of 1211342430043 is 3400342431121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1211342430043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1211342429993 and 1211342430020.

It is not a weakly prime, because it can be changed into another prime (1211342430013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605671215021 + 605671215022.

It is an arithmetic number, because the mean of its divisors is an integer number (605671215022).

Almost surely, 2^{1211342430043} is an apocalyptic number.

1211342430043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211342430043 is an equidigital number, since it uses as much as digits as its factorization.

1211342430043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 1211342430043 its reverse (3400342431121), we get a palindrome (4611684861164).

The spelling of 1211342430043 in words is "one trillion, two hundred eleven billion, three hundred forty-two million, four hundred thirty thousand, forty-three".