121112220020212 has 48 divisors (see below), whose sum is σ = 220627251694080. Its totient is φ = 58125279286368.

The previous prime is 121112220020191. The next prime is 121112220020251. The reversal of 121112220020212 is 212020022211121.

It is a self number, because there is not a number n which added to its sum of digits gives 121112220020212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27404083 + ... + 31515205.

It is an arithmetic number, because the mean of its divisors is an integer number (4596401076960).

Almost surely, 2^{121112220020212} is an apocalyptic number.

It is an amenable number.

121112220020212 is a deficient number, since it is larger than the sum of its proper divisors (99515031673868).

121112220020212 is a wasteful number, since it uses less digits than its factorization.

121112220020212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4114132 (or 4114130 counting only the distinct ones).

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

Adding to 121112220020212 its reverse (212020022211121), we get a palindrome (333132242231333).

The spelling of 121112220020212 in words is "one hundred twenty-one trillion, one hundred twelve billion, two hundred twenty million, twenty thousand, two hundred twelve".