121212012200 has 24 divisors (see below), whose sum is σ = 281817928830. Its totient is φ = 48484804800.

The previous prime is 121212012199. The next prime is 121212012217. The reversal of 121212012200 is 2210212121.

121212012200 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 110978261956 + 10233750244 = 333134^2 + 101162^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 303029831 + ... + 303030230.

Almost surely, 2^121212012200 is an apocalyptic number.

121212012200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121212012200 is an abundant number, since it is smaller than the sum of its proper divisors (160605916630).

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

121212012200 is a wasteful number, since it uses less digits than its factorization.

121212012200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606060077 (or 606060068 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 121212012200 its reverse (2210212121), we get a palindrome (123422224321).

The spelling of 121212012200 in words is "one hundred twenty-one billion, two hundred twelve million, twelve thousand, two hundred".