121122202121212 has 6 divisors (see below), whose sum is σ = 211963853712128. Its totient is φ = 60561101060604.

The previous prime is 121122202121159. The next prime is 121122202121213. The reversal of 121122202121212 is 212121202221121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121122202121213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15140275265148 + ... + 15140275265155.

Almost surely, 2^{121122202121212} is an apocalyptic number.

It is an amenable number.

121122202121212 is a deficient number, since it is larger than the sum of its proper divisors (90841651590916).

121122202121212 is a wasteful number, since it uses less digits than its factorization.

121122202121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30280550530307 (or 30280550530305 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 121122202121212 its reverse (212121202221121), we get a palindrome (333243404342333).

Subtracting 121122202121212 from its reverse (212121202221121), we obtain a palindrome (90999000099909).

The spelling of 121122202121212 in words is "one hundred twenty-one trillion, one hundred twenty-two billion, two hundred two million, one hundred twenty-one thousand, two hundred twelve".