11001120221 has 16 divisors (see below), whose sum is σ = 13725325824. Its totient is φ = 8584942464.

The previous prime is 11001120203. The next prime is 11001120241. The reversal of 11001120221 is 12202110011.

It is not a de Polignac number, because 11001120221 - 2¹⁰ = 11001119197 is a prime.

It is a super-2 number, since 2×11001120221² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11001120241) 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, 821381 + ... + 834666.

It is an arithmetic number, because the mean of its divisors is an integer number (857832864).

Almost surely, 2^11001120221 is an apocalyptic number.

It is an amenable number.

11001120221 is a deficient number, since it is larger than the sum of its proper divisors (2724205603).

11001120221 is a wasteful number, since it uses less digits than its factorization.

11001120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1656140.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 11001120221 its reverse (12202110011), we get a palindrome (23203230232).

The spelling of 11001120221 in words is "eleven billion, one million, one hundred twenty thousand, two hundred twenty-one".