11221101021 has 16 divisors (see below), whose sum is σ = 16262938944. Its totient is φ = 6840754944.

The previous prime is 11221100999. The next prime is 11221101041. The reversal of 11221101021 is 12010112211.

It is not a de Polignac number, because 11221101021 - 2⁷ = 11221100893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11221100988 and 11221101006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221101041) 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, 1340316 + ... + 1348661.

It is an arithmetic number, because the mean of its divisors is an integer number (1016433684).

Almost surely, 2^11221101021 is an apocalyptic number.

It is an amenable number.

11221101021 is a deficient number, since it is larger than the sum of its proper divisors (5041837923).

11221101021 is a wasteful number, since it uses less digits than its factorization.

11221101021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2689100.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 11221101021 its reverse (12010112211), we get a palindrome (23231213232).

The spelling of 11221101021 in words is "eleven billion, two hundred twenty-one million, one hundred one thousand, twenty-one".