11101102211021 has 16 divisors (see below), whose sum is σ = 11763151671024. Its totient is φ = 10440059019264.

The previous prime is 11101102210969. The next prime is 11101102211039. The reversal of 11101102211021 is 12011220110111.

It can be written as a sum of positive squares in 8 ways, for example, as 888852984100 + 10212249226921 = 942790^2 + 3195661^2 .

It is a cyclic number.

It is not a de Polignac number, because 11101102211021 - 2¹⁰ = 11101102209997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11101102210987 and 11101102211005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11101102216021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 399406901 + ... + 399434693.

It is an arithmetic number, because the mean of its divisors is an integer number (735196979439).

Almost surely, 2^{11101102211021} is an apocalyptic number.

It is an amenable number.

11101102211021 is a deficient number, since it is larger than the sum of its proper divisors (662049460003).

11101102211021 is a wasteful number, since it uses less digits than its factorization.

11101102211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45040.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 11101102211021 its reverse (12011220110111), we get a palindrome (23112322321132).

The spelling of 11101102211021 in words is "eleven trillion, one hundred one billion, one hundred two million, two hundred eleven thousand, twenty-one".