11210202221 has 4 divisors (see below), whose sum is σ = 11211103200. Its totient is φ = 11209301244.

The previous prime is 11210202187. The next prime is 11210202229. The reversal of 11210202221 is 12220201211.

11210202221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-11210202221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11210202196 and 11210202205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11210202229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 431561 + ... + 456798.

It is an arithmetic number, because the mean of its divisors is an integer number (2802775800).

Almost surely, 2^11210202221 is an apocalyptic number.

It is an amenable number.

11210202221 is a deficient number, since it is larger than the sum of its proper divisors (900979).

11210202221 is an equidigital number, since it uses as much as digits as its factorization.

11210202221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900978.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 11210202221 its reverse (12220201211), we get a palindrome (23430403432).

The spelling of 11210202221 in words is "eleven billion, two hundred ten million, two hundred two thousand, two hundred twenty-one".