121212010200 has 96 divisors (see below), whose sum is σ = 392094547200. Its totient is φ = 30917842560.

The previous prime is 121212010189. The next prime is 121212010201. The reversal of 121212010200 is 2010212121.

121212010200 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121212010201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4377940 + ... + 4405539.

It is an arithmetic number, because the mean of its divisors is an integer number (4084318200).

Almost surely, 2^121212010200 is an apocalyptic number.

121212010200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121212010200 is an abundant number, since it is smaller than the sum of its proper divisors (270882537000).

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

121212010200 is a wasteful number, since it uses less digits than its factorization.

121212010200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8783521 (or 8783512 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 121212010200 its reverse (2010212121), we get a palindrome (123222222321).

The spelling of 121212010200 in words is "one hundred twenty-one billion, two hundred twelve million, ten thousand, two hundred".