11202221211021 has 36 divisors (see below), whose sum is σ = 16904752172412. Its totient is φ = 7143147188352.

The previous prime is 11202221210993. The next prime is 11202221211031. The reversal of 11202221211021 is 12011212220211.

11202221211021 is a `hidden beast` number, since 11 + 202 + 221 + 211 + 0 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 7970175922500 + 3232045288521 = 2823150^2 + 1797789^2 .

It is not a de Polignac number, because 11202221211021 - 2¹⁰ = 11202221209997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11202221210985 and 11202221211003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11202221211031) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3672816 + ... + 5991161.

Almost surely, 2^{11202221211021} is an apocalyptic number.

It is an amenable number.

11202221211021 is a deficient number, since it is larger than the sum of its proper divisors (5702530961391).

11202221211021 is an equidigital number, since it uses as much as digits as its factorization.

11202221211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9664138 (or 9664076 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 11202221211021 its reverse (12011212220211), we get a palindrome (23213433431232).

The spelling of 11202221211021 in words is "eleven trillion, two hundred two billion, two hundred twenty-one million, two hundred eleven thousand, twenty-one".