11021042423 has 2 divisors, whose sum is σ = 11021042424. Its totient is φ = 11021042422.

The previous prime is 11021042419. The next prime is 11021042443. The reversal of 11021042423 is 32424012011.

It is an a-pointer prime, because the next prime (11021042443) can be obtained adding 11021042423 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11021042423 - 2² = 11021042419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11021042395 and 11021042404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11021042443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5510521211 + 5510521212.

It is an arithmetic number, because the mean of its divisors is an integer number (5510521212).

Almost surely, 2^11021042423 is an apocalyptic number.

11021042423 is a deficient number, since it is larger than the sum of its proper divisors (1).

11021042423 is an equidigital number, since it uses as much as digits as its factorization.

11021042423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 11021042423 its reverse (32424012011), we get a palindrome (43445054434).

The spelling of 11021042423 in words is "eleven billion, twenty-one million, forty-two thousand, four hundred twenty-three".