11420440001 has 4 divisors (see below), whose sum is σ = 11421209904. Its totient is φ = 11419670100.

The previous prime is 11420439971. The next prime is 11420440027. The reversal of 11420440001 is 10004402411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11420440001 - 2⁶ = 11420439937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11420440501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 362255 + ... + 392516.

It is an arithmetic number, because the mean of its divisors is an integer number (2855302476).

Almost surely, 2^11420440001 is an apocalyptic number.

It is an amenable number.

11420440001 is a deficient number, since it is larger than the sum of its proper divisors (769903).

11420440001 is an equidigital number, since it uses as much as digits as its factorization.

11420440001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769902.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 11420440001 its reverse (10004402411), we get a palindrome (21424842412).

The spelling of 11420440001 in words is "eleven billion, four hundred twenty million, four hundred forty thousand, one".