121212202122012 has 24 divisors (see below), whose sum is σ = 282849318793216. Its totient is φ = 40401089206128.

The previous prime is 121212202121999. The next prime is 121212202122023. The reversal of 121212202122012 is 210221202212121.

It is a self number, because there is not a number n which added to its sum of digits gives 121212202122012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 372101398 + ... + 372427005.

Almost surely, 2^{121212202122012} is an apocalyptic number.

121212202122012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121212202122012 is an abundant number, since it is smaller than the sum of its proper divisors (161637116671204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121212202122012 is a wasteful number, since it uses less digits than its factorization.

121212202122012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744541977 (or 744541975 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 121212202122012 its reverse (210221202212121), we get a palindrome (331433404334133).

The spelling of 121212202122012 in words is "one hundred twenty-one trillion, two hundred twelve billion, two hundred two million, one hundred twenty-two thousand, twelve".