11421423401 has 4 divisors (see below), whose sum is σ = 11539170132. Its totient is φ = 11303676672.

The previous prime is 11421423383. The next prime is 11421423443. The reversal of 11421423401 is 10432412411.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5424469801 + 5996953600 = 73651^2 + 77440^2 .

It is a cyclic number.

It is not a de Polignac number, because 11421423401 - 2⁶ = 11421423337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11421423451) 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, 58873220 + ... + 58873413.

It is an arithmetic number, because the mean of its divisors is an integer number (2884792533).

Almost surely, 2^11421423401 is an apocalyptic number.

It is an amenable number.

11421423401 is a deficient number, since it is larger than the sum of its proper divisors (117746731).

11421423401 is an equidigital number, since it uses as much as digits as its factorization.

11421423401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117746730.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 11421423401 its reverse (10432412411), we get a palindrome (21853835812).

The spelling of 11421423401 in words is "eleven billion, four hundred twenty-one million, four hundred twenty-three thousand, four hundred one".