11221202222001 has 6 divisors (see below), whose sum is σ = 16208403209570. Its totient is φ = 7480801481328.

The previous prime is 11221202221991. The next prime is 11221202222029. The reversal of 11221202222001 is 10022220212211.

It is a happy number.

11221202222001 is a `hidden beast` number, since 1 + 1 + 221 + 20 + 222 + 200 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 7058586240000 + 4162615982001 = 2656800^2 + 2040249^2 .

It is not a de Polignac number, because 11221202222001 - 2³⁵ = 11186842483633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11221202222051) 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 5 ways as a sum of consecutive naturals, for example, 623400123436 + ... + 623400123453.

Almost surely, 2^{11221202222001} is an apocalyptic number.

It is an amenable number.

11221202222001 is a deficient number, since it is larger than the sum of its proper divisors (4987200987569).

11221202222001 is a wasteful number, since it uses less digits than its factorization.

11221202222001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1246800246895 (or 1246800246892 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 11221202222001 its reverse (10022220212211), we get a palindrome (21243422434212).

The spelling of 11221202222001 in words is "eleven trillion, two hundred twenty-one billion, two hundred two million, two hundred twenty-two thousand, one".