11202121121 has 8 divisors (see below), whose sum is σ = 11269891584. Its totient is φ = 11134507680.

The previous prime is 11202121103. The next prime is 11202121163. The reversal of 11202121121 is 12112120211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11202121121 - 2¹⁴ = 11202104737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11202121096 and 11202121105.

It is not an unprimeable number, because it can be changed into a prime (11202181121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105461 + ... + 183101.

It is an arithmetic number, because the mean of its divisors is an integer number (1408736448).

Almost surely, 2^11202121121 is an apocalyptic number.

It is an amenable number.

11202121121 is a deficient number, since it is larger than the sum of its proper divisors (67770463).

11202121121 is an equidigital number, since it uses as much as digits as its factorization.

11202121121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78511.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11202121121 its reverse (12112120211), we get a palindrome (23314241332).

The spelling of 11202121121 in words is "eleven billion, two hundred two million, one hundred twenty-one thousand, one hundred twenty-one".