11011001001043 has 2 divisors, whose sum is σ = 11011001001044. Its totient is φ = 11011001001042.

The previous prime is 11011001000899. The next prime is 11011001001073. The reversal of 11011001001043 is 34010010011011.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11011001001043 - 2¹³ = 11011000992851 is a prime.

It is not a weakly prime, because it can be changed into another prime (11011001001073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5505500500521 + 5505500500522.

It is an arithmetic number, because the mean of its divisors is an integer number (5505500500522).

Almost surely, 2^{11011001001043} is an apocalyptic number.

11011001001043 is a deficient number, since it is larger than the sum of its proper divisors (1).

11011001001043 is an equidigital number, since it uses as much as digits as its factorization.

11011001001043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 11011001001043 its reverse (34010010011011), we get a palindrome (45021011012054).

The spelling of 11011001001043 in words is "eleven trillion, eleven billion, one million, one thousand, forty-three".