11403201421 has 4 divisors (see below), whose sum is σ = 11711396092. Its totient is φ = 11095006752.

The previous prime is 11403201419. The next prime is 11403201449. The reversal of 11403201421 is 12410230411.

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 10880576100 + 522625321 = 104310^2 + 22861^2 .

It is a cyclic number.

It is not a de Polignac number, because 11403201421 - 2¹ = 11403201419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11403201461) 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 3 ways as a sum of consecutive naturals, for example, 154097280 + ... + 154097353.

It is an arithmetic number, because the mean of its divisors is an integer number (2927849023).

Almost surely, 2^11403201421 is an apocalyptic number.

It is an amenable number.

11403201421 is a deficient number, since it is larger than the sum of its proper divisors (308194671).

11403201421 is an equidigital number, since it uses as much as digits as its factorization.

11403201421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308194670.

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

Adding to 11403201421 its reverse (12410230411), we get a palindrome (23813431832).

The spelling of 11403201421 in words is "eleven billion, four hundred three million, two hundred one thousand, four hundred twenty-one".