1213422043 has 2 divisors, whose sum is σ = 1213422044. Its totient is φ = 1213422042.

The previous prime is 1213422029. The next prime is 1213422097. The reversal of 1213422043 is 3402243121.

It is a weak prime.

It is an emirp because it is prime and its reverse (3402243121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1213422043 - 2⁵ = 1213422011 is a prime.

It is not a weakly prime, because it can be changed into another prime (1213422943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606711021 + 606711022.

It is an arithmetic number, because the mean of its divisors is an integer number (606711022).

Almost surely, 2^1213422043 is an apocalyptic number.

1213422043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213422043 is an equidigital number, since it uses as much as digits as its factorization.

1213422043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1213422043 is about 34834.2079427680. The cubic root of 1213422043 is about 1066.6058468035.

Adding to 1213422043 its reverse (3402243121), we get a palindrome (4615665164).

The spelling of 1213422043 in words is "one billion, two hundred thirteen million, four hundred twenty-two thousand, forty-three".