11202111021 has 4 divisors (see below), whose sum is σ = 14936148032. Its totient is φ = 7468074012.

The previous prime is 11202111001. The next prime is 11202111023. The reversal of 11202111021 is 12011120211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 11202111021 - 2¹³ = 11202102829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11202110988 and 11202111006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11202111023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1867018501 + ... + 1867018506.

It is an arithmetic number, because the mean of its divisors is an integer number (3734037008).

Almost surely, 2^11202111021 is an apocalyptic number.

It is an amenable number.

11202111021 is a deficient number, since it is larger than the sum of its proper divisors (3734037011).

11202111021 is an equidigital number, since it uses as much as digits as its factorization.

11202111021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3734037010.

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

Adding to 11202111021 its reverse (12011120211), we get a palindrome (23213231232).

The spelling of 11202111021 in words is "eleven billion, two hundred two million, one hundred eleven thousand, twenty-one".