11202120221121 has 16 divisors (see below), whose sum is σ = 16981680957120. Its totient is φ = 7294403864160.

The previous prime is 11202120221099. The next prime is 11202120221213. The reversal of 11202120221121 is 12112202120211.

11202120221121 is a `hidden beast` number, since 1 + 1 + 202 + 120 + 221 + 121 = 666.

It is not a de Polignac number, because 11202120221121 - 2²⁵ = 11202086666689 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11202120221094 and 11202120221103.

It is not an unprimeable number, because it can be changed into a prime (11202120221221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4824340020 + ... + 4824342341.

It is an arithmetic number, because the mean of its divisors is an integer number (1061355059820).

Almost surely, 2^{11202120221121} is an apocalyptic number.

It is an amenable number.

11202120221121 is a deficient number, since it is larger than the sum of its proper divisors (5779560735999).

11202120221121 is an equidigital number, since it uses as much as digits as its factorization.

11202120221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9648682413 (or 9648682407 counting only the distinct ones).

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

Adding to 11202120221121 its reverse (12112202120211), we get a palindrome (23314322341332).

The spelling of 11202120221121 in words is "eleven trillion, two hundred two billion, one hundred twenty million, two hundred twenty-one thousand, one hundred twenty-one".