11202112221021 has 24 divisors (see below), whose sum is σ = 16783775392384. Its totient is φ = 7466447393280.

The previous prime is 11202112220963. The next prime is 11202112221023. The reversal of 11202112221021 is 12012221120211.

It is not a de Polignac number, because 11202112221021 - 2¹⁴ = 11202112204637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11202112220985 and 11202112221003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11202112221023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3904996 + ... + 6136221.

Almost surely, 2^{11202112221021} is an apocalyptic number.

It is an amenable number.

11202112221021 is a deficient number, since it is larger than the sum of its proper divisors (5581663171363).

11202112221021 is an equidigital number, since it uses as much as digits as its factorization.

11202112221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10045823 (or 10045811 counting only the distinct ones).

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

Adding to 11202112221021 its reverse (12012221120211), we get a palindrome (23214333341232).

The spelling of 11202112221021 in words is "eleven trillion, two hundred two billion, one hundred twelve million, two hundred twenty-one thousand, twenty-one".