11420420011 has 16 divisors (see below), whose sum is σ = 15333712128. Its totient is φ = 8214487200.

The previous prime is 11420419999. The next prime is 11420420029. The reversal of 11420420011 is 11002402411.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11420420011 - 2¹¹ = 11420417963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11420420411) 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 in 15 ways as a sum of consecutive naturals, for example, 5703505 + ... + 5705506.

It is an arithmetic number, because the mean of its divisors is an integer number (958357008).

Almost surely, 2^11420420011 is an apocalyptic number.

11420420011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11420420011 is a deficient number, since it is larger than the sum of its proper divisors (3913292117).

11420420011 is a wasteful number, since it uses less digits than its factorization.

11420420011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11409042.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 11420420011 its reverse (11002402411), we get a palindrome (22422822422).

The spelling of 11420420011 in words is "eleven billion, four hundred twenty million, four hundred twenty thousand, eleven".