11221210211201 has 16 divisors (see below), whose sum is σ = 11366907091920. Its totient is φ = 11075955179520.

The previous prime is 11221210211173. The next prime is 11221210211219. The reversal of 11221210211201 is 10211201212211.

It can be written as a sum of positive squares in 8 ways, for example, as 259946002801 + 10961264208400 = 509849^2 + 3310780^2 .

It is a cyclic number.

It is not a de Polignac number, because 11221210211201 - 2⁶ = 11221210211137 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 11221210211201.

It is not an unprimeable number, because it can be changed into a prime (11221210211221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 442516415 + ... + 442541771.

It is an arithmetic number, because the mean of its divisors is an integer number (710431693245).

Almost surely, 2^{11221210211201} is an apocalyptic number.

It is an amenable number.

11221210211201 is a deficient number, since it is larger than the sum of its proper divisors (145696880719).

11221210211201 is an equidigital number, since it uses as much as digits as its factorization.

11221210211201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33844.

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

Adding to 11221210211201 its reverse (10211201212211), we get a palindrome (21432411423412).

The spelling of 11221210211201 in words is "eleven trillion, two hundred twenty-one billion, two hundred ten million, two hundred eleven thousand, two hundred one".