12202221011121 has 10 divisors (see below), whose sum is σ = 18228009164882. Its totient is φ = 8134814007360.

The previous prime is 12202221011119. The next prime is 12202221011131. The reversal of 12202221011121 is 12111012220221.

12202221011121 is a `hidden beast` number, since 1 + 220 + 222 + 101 + 1 + 121 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9723863492721 + 2478357518400 = 3118311^2 + 1574280^2 .

It is not a de Polignac number, because 12202221011121 - 2¹ = 12202221011119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12202221011094 and 12202221011103.

It is not an unprimeable number, because it can be changed into a prime (12202221011131) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 75322351840 + ... + 75322352001.

Almost surely, 2^{12202221011121} is an apocalyptic number.

It is an amenable number.

12202221011121 is a deficient number, since it is larger than the sum of its proper divisors (6025788153761).

12202221011121 is an equidigital number, since it uses as much as digits as its factorization.

12202221011121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150644703853 (or 150644703844 counting only the distinct ones).

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

Adding to 12202221011121 its reverse (12111012220221), we get a palindrome (24313233231342).

The spelling of 12202221011121 in words is "twelve trillion, two hundred two billion, two hundred twenty-one million, eleven thousand, one hundred twenty-one".