121202212212012 has 48 divisors (see below), whose sum is σ = 289015745905152. Its totient is φ = 39514662613440.

The previous prime is 121202212212001. The next prime is 121202212212019. The reversal of 121202212212012 is 210212212202121.

It is a self number, because there is not a number n which added to its sum of digits gives 121202212212012.

It is not an unprimeable number, because it can be changed into a prime (121202212212019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71126314 + ... + 72810417.

It is an arithmetic number, because the mean of its divisors is an integer number (6021161373024).

Almost surely, 2^{121202212212012} is an apocalyptic number.

121202212212012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121202212212012 is an abundant number, since it is smaller than the sum of its proper divisors (167813533693140).

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

121202212212012 is a wasteful number, since it uses less digits than its factorization.

121202212212012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143938278 (or 143938276 counting only the distinct ones).

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

Adding to 121202212212012 its reverse (210212212202121), we get a palindrome (331414424414133).

The spelling of 121202212212012 in words is "one hundred twenty-one trillion, two hundred two billion, two hundred twelve million, two hundred twelve thousand, twelve".