11111222201 has 16 divisors (see below), whose sum is σ = 11598467328. Its totient is φ = 10637040000.

The previous prime is 11111222149. The next prime is 11111222207. The reversal of 11111222201 is 10222211111.

It is a de Polignac number, because none of the positive numbers 2^k-11111222201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11111222207) 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, 379901 + ... + 408101.

It is an arithmetic number, because the mean of its divisors is an integer number (724904208).

Almost surely, 2^11111222201 is an apocalyptic number.

It is an amenable number.

11111222201 is a deficient number, since it is larger than the sum of its proper divisors (487245127).

11111222201 is a wasteful number, since it uses less digits than its factorization.

11111222201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28432.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11111222201 its reverse (10222211111), we get a palindrome (21333433312).

The spelling of 11111222201 in words is "eleven billion, one hundred eleven million, two hundred twenty-two thousand, two hundred one".