11102033221 has 4 divisors (see below), whose sum is σ = 11211954444. Its totient is φ = 10992112000.

The previous prime is 11102033213. The next prime is 11102033227. The reversal of 11102033221 is 12233020111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5103530721 + 5998502500 = 71439^2 + 77450^2 .

It is a cyclic number.

It is not a de Polignac number, because 11102033221 - 2³ = 11102033213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11102033195 and 11102033204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11102033227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54960460 + ... + 54960661.

It is an arithmetic number, because the mean of its divisors is an integer number (2802988611).

Almost surely, 2^11102033221 is an apocalyptic number.

It is an amenable number.

11102033221 is a deficient number, since it is larger than the sum of its proper divisors (109921223).

11102033221 is a wasteful number, since it uses less digits than its factorization.

11102033221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109921222.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 11102033221 its reverse (12233020111), we get a palindrome (23335053332).

The spelling of 11102033221 in words is "eleven billion, one hundred two million, thirty-three thousand, two hundred twenty-one".