11211134414221 has 4 divisors (see below), whose sum is σ = 12812725044832. Its totient is φ = 9609543783612.

The previous prime is 11211134414219. The next prime is 11211134414279. The reversal of 11211134414221 is 12241443111211.

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 11211134414221 - 2¹ = 11211134414219 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11211134414221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211134424221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 800795315295 + ... + 800795315308.

It is an arithmetic number, because the mean of its divisors is an integer number (3203181261208).

Almost surely, 2^{11211134414221} is an apocalyptic number.

It is an amenable number.

11211134414221 is a deficient number, since it is larger than the sum of its proper divisors (1601590630611).

11211134414221 is an equidigital number, since it uses as much as digits as its factorization.

11211134414221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601590630610.

The product of its digits is 1536, while the sum is 28.

Adding to 11211134414221 its reverse (12241443111211), we get a palindrome (23452577525432).

The spelling of 11211134414221 in words is "eleven trillion, two hundred eleven billion, one hundred thirty-four million, four hundred fourteen thousand, two hundred twenty-one".