12221001111 has 32 divisors (see below), whose sum is σ = 17977720320. Its totient is φ = 7322832000.

The previous prime is 12221001103. The next prime is 12221001113. The reversal of 12221001111 is 11110012221.

It is not a de Polignac number, because 12221001111 - 2³ = 12221001103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221001113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2760846 + ... + 2765268.

It is an arithmetic number, because the mean of its divisors is an integer number (561803760).

Almost surely, 2^12221001111 is an apocalyptic number.

12221001111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12221001111 is a deficient number, since it is larger than the sum of its proper divisors (5756719209).

12221001111 is a wasteful number, since it uses less digits than its factorization.

12221001111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5367.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12221001111 its reverse (11110012221), we get a palindrome (23331013332).

The spelling of 12221001111 in words is "twelve billion, two hundred twenty-one million, one thousand, one hundred eleven".