11220111222201 has 12 divisors (see below), whose sum is σ = 18522088366912. Its totient is φ = 6411492126936.

The previous prime is 11220111222179. The next prime is 11220111222209. The reversal of 11220111222201 is 10222211102211.

11220111222201 is a `hidden beast` number, since 11 + 220 + 1 + 11 + 222 + 201 = 666.

It is not a de Polignac number, because 11220111222201 - 2⁶ = 11220111222137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11220111222209) 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 11 ways as a sum of consecutive naturals, for example, 89048501701 + ... + 89048501826.

Almost surely, 2^{11220111222201} is an apocalyptic number.

It is an amenable number.

11220111222201 is a deficient number, since it is larger than the sum of its proper divisors (7301977144711).

11220111222201 is a wasteful number, since it uses less digits than its factorization.

11220111222201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178097003540 (or 178097003537 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 11220111222201 its reverse (10222211102211), we get a palindrome (21442322324412).

The spelling of 11220111222201 in words is "eleven trillion, two hundred twenty billion, one hundred eleven million, two hundred twenty-two thousand, two hundred one".