11402303221 has 4 divisors (see below), whose sum is σ = 11424105472. Its totient is φ = 11380500972.

The previous prime is 11402303179. The next prime is 11402303239. The reversal of 11402303221 is 12230320411.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12230320411 = 181 ⋅67570831.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11402303221 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 (11402333221) 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, 10900341 + ... + 10901386.

It is an arithmetic number, because the mean of its divisors is an integer number (2856026368).

Almost surely, 2^11402303221 is an apocalyptic number.

It is an amenable number.

11402303221 is a deficient number, since it is larger than the sum of its proper divisors (21802251).

11402303221 is an equidigital number, since it uses as much as digits as its factorization.

11402303221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21802250.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 11402303221 its reverse (12230320411), we get a palindrome (23632623632).

The spelling of 11402303221 in words is "eleven billion, four hundred two million, three hundred three thousand, two hundred twenty-one".