11110012221 has 64 divisors (see below), whose sum is σ = 19254362112. Its totient is φ = 5529600000.

The previous prime is 11110012219. The next prime is 11110012231. The reversal of 11110012221 is 12221001111.

It is not a de Polignac number, because 11110012221 - 2¹ = 11110012219 is a prime.

11110012221 is a modest number, since divided by 12221 gives 11110 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 11110012197 and 11110012206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11110012231) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 715581 + ... + 730941.

It is an arithmetic number, because the mean of its divisors is an integer number (300849408).

Almost surely, 2^11110012221 is an apocalyptic number.

11110012221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11110012221 is a deficient number, since it is larger than the sum of its proper divisors (8144349891).

11110012221 is a wasteful number, since it uses less digits than its factorization.

11110012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15514.

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

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

It can be divided in two parts, 111100 and 12221, that added together give a palindrome (123321).

The spelling of 11110012221 in words is "eleven billion, one hundred ten million, twelve thousand, two hundred twenty-one".