12232202121 has 20 divisors (see below), whose sum is σ = 18312488964. Its totient is φ = 8137087200.

The previous prime is 12232202119. The next prime is 12232202167. The reversal of 12232202121 is 12120223221.

It can be written as a sum of positive squares in 2 ways, for example, as 7945226496 + 4286975625 = 89136^2 + 65475^2 .

It is not a de Polignac number, because 12232202121 - 2¹ = 12232202119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12232202094 and 12232202103.

It is not an unprimeable number, because it can be changed into a prime (12232202821) 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, 126450 + ... + 201131.

Almost surely, 2^12232202121 is an apocalyptic number.

It is an amenable number.

12232202121 is a deficient number, since it is larger than the sum of its proper divisors (6080286843).

12232202121 is an equidigital number, since it uses as much as digits as its factorization.

12232202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328054 (or 328045 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 12232202121 its reverse (12120223221), we get a palindrome (24352425342).

The spelling of 12232202121 in words is "twelve billion, two hundred thirty-two million, two hundred two thousand, one hundred twenty-one".