1111211212043 has 2 divisors, whose sum is σ = 1111211212044. Its totient is φ = 1111211212042.

The previous prime is 1111211212009. The next prime is 1111211212091. The reversal of 1111211212043 is 3402121121111.

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-1111211212043 is a prime.

It is not a weakly prime, because it can be changed into another prime (1111211212543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555605606021 + 555605606022.

It is an arithmetic number, because the mean of its divisors is an integer number (555605606022).

Almost surely, 2^{1111211212043} is an apocalyptic number.

1111211212043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111211212043 is an equidigital number, since it uses as much as digits as its factorization.

1111211212043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 1111211212043 its reverse (3402121121111), we get a palindrome (4513332333154).

The spelling of 1111211212043 in words is "one trillion, one hundred eleven billion, two hundred eleven million, two hundred twelve thousand, forty-three".