11202211121121 has 24 divisors (see below), whose sum is σ = 16687827911040. Its totient is φ = 7235896129056.

The previous prime is 11202211121111. The next prime is 11202211121177. The reversal of 11202211121121 is 12112111220211.

It is a happy number.

11202211121121 is a `hidden beast` number, since 11 + 202 + 211 + 121 + 121 = 666.

It is not a de Polignac number, because 11202211121121 - 2⁵ = 11202211121089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11202211121094 and 11202211121103.

It is not an unprimeable number, because it can be changed into a prime (11202211121111) 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, 70297555 + ... + 70456728.

It is an arithmetic number, because the mean of its divisors is an integer number (695326162960).

Almost surely, 2^{11202211121121} is an apocalyptic number.

It is an amenable number.

11202211121121 is a deficient number, since it is larger than the sum of its proper divisors (5485616789919).

11202211121121 is a wasteful number, since it uses less digits than its factorization.

11202211121121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140754565 (or 140754562 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 11202211121121 its reverse (12112111220211), we get a palindrome (23314322341332).

The spelling of 11202211121121 in words is "eleven trillion, two hundred two billion, two hundred eleven million, one hundred twenty-one thousand, one hundred twenty-one".