11222210111121 has 20 divisors (see below), whose sum is σ = 16796977576500. Its totient is φ = 7466775003936.

The previous prime is 11222210111107. The next prime is 11222210111141. The reversal of 11222210111121 is 12111101222211.

It is a happy number.

11222210111121 is a `hidden beast` number, since 1 + 1 + 222 + 210 + 111 + 121 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5155915000896 + 6066295110225 = 2270664^2 + 2462985^2 .

It is not a de Polignac number, because 11222210111121 - 2²⁹ = 11221673240209 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11222210111094 and 11222210111103.

It is not an unprimeable number, because it can be changed into a prime (11222210111141) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 136054846 + ... + 136137303.

It is an arithmetic number, because the mean of its divisors is an integer number (839848878825).

Almost surely, 2^{11222210111121} is an apocalyptic number.

It is an amenable number.

11222210111121 is a deficient number, since it is larger than the sum of its proper divisors (5574767465379).

11222210111121 is an equidigital number, since it uses as much as digits as its factorization.

11222210111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272192670 (or 272192661 counting only the distinct ones).

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

Adding to 11222210111121 its reverse (12111101222211), we get a palindrome (23333311333332).

The spelling of 11222210111121 in words is "eleven trillion, two hundred twenty-two billion, two hundred ten million, one hundred eleven thousand, one hundred twenty-one".