121222102212 has 36 divisors (see below), whose sum is σ = 307078729776. Its totient is φ = 40320836400.

The previous prime is 121222102193. The next prime is 121222102237. The reversal of 121222102212 is 212201222121.

It is a happy number.

121222102212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3588414 + ... + 3622037.

It is an arithmetic number, because the mean of its divisors is an integer number (8529964716).

Almost surely, 2^121222102212 is an apocalyptic number.

121222102212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121222102212 is an abundant number, since it is smaller than the sum of its proper divisors (185856627564).

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

121222102212 is a wasteful number, since it uses less digits than its factorization.

121222102212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7210928 (or 7210923 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 121222102212 its reverse (212201222121), we get a palindrome (333423324333).

The spelling of 121222102212 in words is "one hundred twenty-one billion, two hundred twenty-two million, one hundred two thousand, two hundred twelve".