11221120211021 has 8 divisors (see below), whose sum is σ = 12922031563584. Its totient is φ = 9544682403360.

The previous prime is 11221120211003. The next prime is 11221120211261. The reversal of 11221120211021 is 12011202112211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11221120211021 - 2²⁶ = 11221053102157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221120241021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6118385240 + ... + 6118387073.

It is an arithmetic number, because the mean of its divisors is an integer number (1615253945448).

Almost surely, 2^{11221120211021} is an apocalyptic number.

It is an amenable number.

11221120211021 is a deficient number, since it is larger than the sum of its proper divisors (1700911352563).

11221120211021 is a wasteful number, since it uses less digits than its factorization.

11221120211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12236772451.

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

Adding to 11221120211021 its reverse (12011202112211), we get a palindrome (23232322323232).

The spelling of 11221120211021 in words is "eleven trillion, two hundred twenty-one billion, one hundred twenty million, two hundred eleven thousand, twenty-one".