12202132121 has 4 divisors (see below), whose sum is σ = 12204441012. Its totient is φ = 12199823232.

The previous prime is 12202132099. The next prime is 12202132123. The reversal of 12202132121 is 12123120221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12123120221 = 19 ⋅638058959.

It can be written as a sum of positive squares in 2 ways, for example, as 11435949721 + 766182400 = 106939^2 + 27680^2 .

It is a cyclic number.

It is not a de Polignac number, because 12202132121 - 2³⁰ = 11128390297 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12202132121.

It is not an unprimeable number, because it can be changed into a prime (12202132123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1146500 + ... + 1157093.

It is an arithmetic number, because the mean of its divisors is an integer number (3051110253).

Almost surely, 2^12202132121 is an apocalyptic number.

It is an amenable number.

12202132121 is a deficient number, since it is larger than the sum of its proper divisors (2308891).

12202132121 is an equidigital number, since it uses as much as digits as its factorization.

12202132121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2308890.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 12202132121 its reverse (12123120221), we get a palindrome (24325252342).

The spelling of 12202132121 in words is "twelve billion, two hundred two million, one hundred thirty-two thousand, one hundred twenty-one".