11221011121021 has 12 divisors (see below), whose sum is σ = 12189631727520. Its totient is φ = 10324551366480.

The previous prime is 11221011121013. The next prime is 11221011121027. The reversal of 11221011121021 is 12012111012211.

It is not a de Polignac number, because 11221011121021 - 2³ = 11221011121013 is a prime.

It is a super-2 number, since 2×11221011121021² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11221011120986 and 11221011121004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221011121027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 106694251 + ... + 106799368.

It is an arithmetic number, because the mean of its divisors is an integer number (1015802643960).

Almost surely, 2^{11221011121021} is an apocalyptic number.

It is an amenable number.

11221011121021 is a deficient number, since it is larger than the sum of its proper divisors (968620606499).

11221011121021 is a wasteful number, since it uses less digits than its factorization.

11221011121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213493956 (or 213493943 counting only the distinct ones).

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

Adding to 11221011121021 its reverse (12012111012211), we get a palindrome (23233122133232).

The spelling of 11221011121021 in words is "eleven trillion, two hundred twenty-one billion, eleven million, one hundred twenty-one thousand, twenty-one".