11221022120221 has 16 divisors (see below), whose sum is σ = 11994164006400. Its totient is φ = 10474313572800.

The previous prime is 11221022120201. The next prime is 11221022120233. The reversal of 11221022120221 is 12202122012211.

It is a cyclic number.

It is not a de Polignac number, because 11221022120221 - 2³⁹ = 10671266306333 is a prime.

It is a super-2 number, since 2×11221022120221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221022120201) 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 15 ways as a sum of consecutive naturals, for example, 5208390 + ... + 7040551.

It is an arithmetic number, because the mean of its divisors is an integer number (749635250400).

Almost surely, 2^{11221022120221} is an apocalyptic number.

It is an amenable number.

11221022120221 is a deficient number, since it is larger than the sum of its proper divisors (773141886179).

11221022120221 is a wasteful number, since it uses less digits than its factorization.

11221022120221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12250020.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 11221022120221 its reverse (12202122012211), we get a palindrome (23423144132432).

The spelling of 11221022120221 in words is "eleven trillion, two hundred twenty-one billion, twenty-two million, one hundred twenty thousand, two hundred twenty-one".