11420423011 has 2 divisors, whose sum is σ = 11420423012. Its totient is φ = 11420423010.

The previous prime is 11420422991. The next prime is 11420423099. The reversal of 11420423011 is 11032402411.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11420423011 - 2⁷ = 11420422883 is a prime.

It is a super-2 number, since 2×11420423011² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11420423011.

It is not a weakly prime, because it can be changed into another prime (11421423011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5710211505 + 5710211506.

It is an arithmetic number, because the mean of its divisors is an integer number (5710211506).

Almost surely, 2^11420423011 is an apocalyptic number.

11420423011 is a deficient number, since it is larger than the sum of its proper divisors (1).

11420423011 is an equidigital number, since it uses as much as digits as its factorization.

11420423011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 11420423011 its reverse (11032402411), we get a palindrome (22452825422).

The spelling of 11420423011 in words is "eleven billion, four hundred twenty million, four hundred twenty-three thousand, eleven".