11221210012211 has 4 divisors (see below), whose sum is σ = 11482168384632. Its totient is φ = 10960251639792.

The previous prime is 11221210012171. The next prime is 11221210012237. The reversal of 11221210012211 is 11221001212211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11221210012211 - 2⁶ = 11221210012147 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 11221210012211.

It is not an unprimeable number, because it can be changed into a prime (11221210012291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130479186146 + ... + 130479186231.

It is an arithmetic number, because the mean of its divisors is an integer number (2870542096158).

Almost surely, 2^{11221210012211} is an apocalyptic number.

11221210012211 is a deficient number, since it is larger than the sum of its proper divisors (260958372421).

11221210012211 is an equidigital number, since it uses as much as digits as its factorization.

11221210012211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260958372420.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11221210012211 its reverse (11221001212211), we get a palindrome (22442211224422).

The spelling of 11221210012211 in words is "eleven trillion, two hundred twenty-one billion, two hundred ten million, twelve thousand, two hundred eleven".