11211403321 has 16 divisors (see below), whose sum is σ = 12509467200. Its totient is φ = 9985517568.

The previous prime is 11211403271. The next prime is 11211403331. The reversal of 11211403321 is 12330411211.

It is a cyclic number.

It is not a de Polignac number, because 11211403321 - 2²¹ = 11209306169 is a prime.

It is a super-2 number, since 2×11211403321² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11211403331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 281386 + ... + 318748.

It is an arithmetic number, because the mean of its divisors is an integer number (781841700).

Almost surely, 2^11211403321 is an apocalyptic number.

It is an amenable number.

11211403321 is a deficient number, since it is larger than the sum of its proper divisors (1298063879).

11211403321 is a wasteful number, since it uses less digits than its factorization.

11211403321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38328.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 11211403321 its reverse (12330411211), we get a palindrome (23541814532).

The spelling of 11211403321 in words is "eleven billion, two hundred eleven million, four hundred three thousand, three hundred twenty-one".