12202121224 has 8 divisors (see below), whose sum is σ = 22878977310. Its totient is φ = 6101060608.

The previous prime is 12202121209. The next prime is 12202121231. The reversal of 12202121224 is 42212120221.

It can be written as a sum of positive squares in only one way, i.e., 8926848324 + 3275272900 = 94482^2 + 57230^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 762632569 + ... + 762632584.

Almost surely, 2^12202121224 is an apocalyptic number.

It is an amenable number.

12202121224 is a deficient number, since it is larger than the sum of its proper divisors (10676856086).

12202121224 is a wasteful number, since it uses less digits than its factorization.

12202121224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1525265159 (or 1525265155 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 12202121224 its reverse (42212120221), we get a palindrome (54414241445).

The spelling of 12202121224 in words is "twelve billion, two hundred two million, one hundred twenty-one thousand, two hundred twenty-four".