11210321221 has 16 divisors (see below), whose sum is σ = 12270394368. Its totient is φ = 10157140800.

The previous prime is 11210321191. The next prime is 11210321261. The reversal of 11210321221 is 12212301211.

It is a cyclic number.

It is not a de Polignac number, because 11210321221 - 2⁷ = 11210321093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11210321195 and 11210321204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11210321261) 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 15 ways as a sum of consecutive naturals, for example, 6467871 + ... + 6469603.

It is an arithmetic number, because the mean of its divisors is an integer number (766899648).

Almost surely, 2^11210321221 is an apocalyptic number.

11210321221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11210321221 is a deficient number, since it is larger than the sum of its proper divisors (1060073147).

11210321221 is a wasteful number, since it uses less digits than its factorization.

11210321221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3372.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 11210321221 its reverse (12212301211), we get a palindrome (23422622432).

The spelling of 11210321221 in words is "eleven billion, two hundred ten million, three hundred twenty-one thousand, two hundred twenty-one".