11102221120121 has 4 divisors (see below), whose sum is σ = 11258590431744. Its totient is φ = 10945851808500.

The previous prime is 11102221120117. The next prime is 11102221120129. The reversal of 11102221120121 is 12102112220111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11102221120121 - 2² = 11102221120117 is a prime.

It is a super-2 number, since 2×11102221120121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11102221120121.

It is not an unprimeable number, because it can be changed into a prime (11102221120129) 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, 78184655705 + ... + 78184655846.

It is an arithmetic number, because the mean of its divisors is an integer number (2814647607936).

Almost surely, 2^{11102221120121} is an apocalyptic number.

It is an amenable number.

11102221120121 is a deficient number, since it is larger than the sum of its proper divisors (156369311623).

11102221120121 is an equidigital number, since it uses as much as digits as its factorization.

11102221120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156369311622.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11102221120121 its reverse (12102112220111), we get a palindrome (23204333340232).

The spelling of 11102221120121 in words is "eleven trillion, one hundred two billion, two hundred twenty-one million, one hundred twenty thousand, one hundred twenty-one".