1211002043 has 2 divisors, whose sum is σ = 1211002044. Its totient is φ = 1211002042.

The previous prime is 1211002007. The next prime is 1211002159. The reversal of 1211002043 is 3402001121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1211002043 - 2²⁸ = 942566587 is a prime.

It is not a weakly prime, because it can be changed into another prime (1211002343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605501021 + 605501022.

It is an arithmetic number, because the mean of its divisors is an integer number (605501022).

Almost surely, 2^1211002043 is an apocalyptic number.

1211002043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211002043 is an equidigital number, since it uses as much as digits as its factorization.

1211002043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1211002043 is about 34799.4546365313. The cubic root of 1211002043 is about 1065.8963096709.

Adding to 1211002043 its reverse (3402001121), we get a palindrome (4613003164).

The spelling of 1211002043 in words is "one billion, two hundred eleven million, two thousand, forty-three".