1001213122043 has 2 divisors, whose sum is σ = 1001213122044. Its totient is φ = 1001213122042.

The previous prime is 1001213122001. The next prime is 1001213122057. The reversal of 1001213122043 is 3402213121001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1001213122043 - 2¹⁰ = 1001213121019 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1001213122073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500606561021 + 500606561022.

It is an arithmetic number, because the mean of its divisors is an integer number (500606561022).

Almost surely, 2^{1001213122043} is an apocalyptic number.

1001213122043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001213122043 is an equidigital number, since it uses as much as digits as its factorization.

1001213122043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1001213122043 its reverse (3402213121001), we get a palindrome (4403426243044).

The spelling of 1001213122043 in words is "one trillion, one billion, two hundred thirteen million, one hundred twenty-two thousand, forty-three".