12201121222012 has 6 divisors (see below), whose sum is σ = 21351962138528. Its totient is φ = 6100560611004.

The previous prime is 12201121222001. The next prime is 12201121222033. The reversal of 12201121222012 is 21022212110221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1525140152748 + ... + 1525140152755.

Almost surely, 2^{12201121222012} is an apocalyptic number.

It is an amenable number.

12201121222012 is a deficient number, since it is larger than the sum of its proper divisors (9150840916516).

12201121222012 is a wasteful number, since it uses less digits than its factorization.

12201121222012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3050280305507 (or 3050280305505 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12201121222012 its reverse (21022212110221), we get a palindrome (33223333332233).

The spelling of 12201121222012 in words is "twelve trillion, two hundred one billion, one hundred twenty-one million, two hundred twenty-two thousand, twelve".