11222221120221 has 8 divisors (see below), whose sum is σ = 14963028542784. Its totient is φ = 7481447222240.

The previous prime is 11222221120211. The next prime is 11222221120249. The reversal of 11222221120221 is 12202112222211.

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 11222221120221 - 2⁵ = 11222221120189 is a prime.

It is a super-2 number, since 2×11222221120221² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11222221120211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7589385 + ... + 8946686.

It is an arithmetic number, because the mean of its divisors is an integer number (1870378567848).

Almost surely, 2^{11222221120221} is an apocalyptic number.

It is an amenable number.

11222221120221 is a deficient number, since it is larger than the sum of its proper divisors (3740807422563).

11222221120221 is a wasteful number, since it uses less digits than its factorization.

11222221120221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16762291.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 11222221120221 its reverse (12202112222211), we get a palindrome (23424333342432).

The spelling of 11222221120221 in words is "eleven trillion, two hundred twenty-two billion, two hundred twenty-one million, one hundred twenty thousand, two hundred twenty-one".