121001120212 has 24 divisors (see below), whose sum is σ = 246568323456. Its totient is φ = 50879176608.

The previous prime is 121001120203. The next prime is 121001120291. The reversal of 121001120212 is 212021100121.

It is a junction number, because it is equal to n+sod(n) for n = 121001120192 and 121001120201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40767088 + ... + 40770055.

It is an arithmetic number, because the mean of its divisors is an integer number (10273680144).

Almost surely, 2^121001120212 is an apocalyptic number.

It is an amenable number.

121001120212 is an abundant number, since it is smaller than the sum of its proper divisors (125567203244).

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

121001120212 is a wasteful number, since it uses less digits than its factorization.

121001120212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81537207 (or 81537205 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 121001120212 its reverse (212021100121), we get a palindrome (333022220333).

The spelling of 121001120212 in words is "one hundred twenty-one billion, one million, one hundred twenty thousand, two hundred twelve".