11220011121 has 16 divisors (see below), whose sum is σ = 16366795200. Its totient is φ = 6780515520.

The previous prime is 11220011093. The next prime is 11220011191. The reversal of 11220011121 is 12111002211.

It is not a de Polignac number, because 11220011121 - 2⁷ = 11220010993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11220011097 and 11220011106.

It is not an unprimeable number, because it can be changed into a prime (11220011191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 475590 + ... + 498623.

It is an arithmetic number, because the mean of its divisors is an integer number (1022924700).

Almost surely, 2^11220011121 is an apocalyptic number.

11220011121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11220011121 is a deficient number, since it is larger than the sum of its proper divisors (5146784079).

11220011121 is a wasteful number, since it uses less digits than its factorization.

11220011121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974576.

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

Adding to 11220011121 its reverse (12111002211), we get a palindrome (23331013332).

It can be divided in two parts, 112200 and 11121, that added together give a palindrome (123321).

The spelling of 11220011121 in words is "eleven billion, two hundred twenty million, eleven thousand, one hundred twenty-one".