11222201212211 has 4 divisors (see below), whose sum is σ = 12242401322424. Its totient is φ = 10202001102000.

The previous prime is 11222201212199. The next prime is 11222201212231. The reversal of 11222201212211 is 11221210222211.

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 11222201212211 - 2⁶ = 11222201212147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11222201212231) 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, 510100055090 + ... + 510100055111.

It is an arithmetic number, because the mean of its divisors is an integer number (3060600330606).

Almost surely, 2^{11222201212211} is an apocalyptic number.

11222201212211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11222201212211 is a deficient number, since it is larger than the sum of its proper divisors (1020200110213).

11222201212211 is a wasteful number, since it uses less digits than its factorization.

11222201212211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020200110212.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 11222201212211 its reverse (11221210222211), we get a palindrome (22443411434422).

The spelling of 11222201212211 in words is "eleven trillion, two hundred twenty-two billion, two hundred one million, two hundred twelve thousand, two hundred eleven".