121222210100212 has 24 divisors (see below), whose sum is σ = 228459003948000. Its totient is φ = 55948280883936.

The previous prime is 121222210100207. The next prime is 121222210100261. The reversal of 121222210100212 is 212001012222121.

It is a self number, because there is not a number n which added to its sum of digits gives 121222210100212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2131462 + ... + 15715837.

It is an arithmetic number, because the mean of its divisors is an integer number (9519125164500).

Almost surely, 2^{121222210100212} is an apocalyptic number.

It is an amenable number.

121222210100212 is a deficient number, since it is larger than the sum of its proper divisors (107236793847788).

121222210100212 is a wasteful number, since it uses less digits than its factorization.

121222210100212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17977935 (or 17977933 counting only the distinct ones).

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

Adding to 121222210100212 its reverse (212001012222121), we get a palindrome (333223222322333).

The spelling of 121222210100212 in words is "one hundred twenty-one trillion, two hundred twenty-two billion, two hundred ten million, one hundred thousand, two hundred twelve".