11222211210121 has 24 divisors (see below), whose sum is σ = 12137577326280. Its totient is φ = 10362688740096.

The previous prime is 11222211210061. The next prime is 11222211210131. The reversal of 11222211210121 is 12101211222211.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 29305673721 + 11192905536400 = 171189^2 + 3345580^2 .

It is not a de Polignac number, because 11222211210121 - 2⁹ = 11222211209609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11222211210131) 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, 118339101 + ... + 118433893.

It is an arithmetic number, because the mean of its divisors is an integer number (505732388595).

Almost surely, 2^{11222211210121} is an apocalyptic number.

It is an amenable number.

11222211210121 is a deficient number, since it is larger than the sum of its proper divisors (915366116159).

11222211210121 is an equidigital number, since it uses as much as digits as its factorization.

11222211210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102585 (or 102562 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 11222211210121 its reverse (12101211222211), we get a palindrome (23323422432332).

The spelling of 11222211210121 in words is "eleven trillion, two hundred twenty-two billion, two hundred eleven million, two hundred ten thousand, one hundred twenty-one".