11201202221 has 12 divisors (see below), whose sum is σ = 12896478144. Its totient is φ = 9646965000.

The previous prime is 11201202217. The next prime is 11201202247. The reversal of 11201202221 is 12220210211.

It is not a de Polignac number, because 11201202221 - 2² = 11201202217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11201202196 and 11201202205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11201202211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1406405 + ... + 1414346.

It is an arithmetic number, because the mean of its divisors is an integer number (1074706512).

Almost surely, 2^11201202221 is an apocalyptic number.

11201202221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11201202221 is a deficient number, since it is larger than the sum of its proper divisors (1695275923).

11201202221 is a wasteful number, since it uses less digits than its factorization.

11201202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2820800 (or 2820781 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 11201202221 its reverse (12220210211), we get a palindrome (23421412432).

The spelling of 11201202221 in words is "eleven billion, two hundred one million, two hundred two thousand, two hundred twenty-one".