11221221201 has 16 divisors (see below), whose sum is σ = 15002969280. Its totient is φ = 7460167680.

The previous prime is 11221221113. The next prime is 11221221217. The reversal of 11221221201 is 10212212211.

It is not a de Polignac number, because 11221221201 - 2⁷ = 11221221073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11221221241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3959481 + ... + 3962313.

It is an arithmetic number, because the mean of its divisors is an integer number (937685580).

Almost surely, 2^11221221201 is an apocalyptic number.

It is an amenable number.

11221221201 is a deficient number, since it is larger than the sum of its proper divisors (3781748079).

11221221201 is a wasteful number, since it uses less digits than its factorization.

11221221201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6016.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 11221221201 its reverse (10212212211), we get a palindrome (21433433412).

The spelling of 11221221201 in words is "eleven billion, two hundred twenty-one million, two hundred twenty-one thousand, two hundred one".