121212200211200 has 432 divisors, whose sum is σ = 361069625898240. Its totient is φ = 39355435008000.

The previous prime is 121212200211187. The next prime is 121212200211251. The reversal of 121212200211200 is 2112002212121.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2230968035 + ... + 2231022365.

Almost surely, 2^{121212200211200} is an apocalyptic number.

121212200211200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121212200211200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180534812949120).

121212200211200 is an abundant number, since it is smaller than the sum of its proper divisors (239857425687040).

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

121212200211200 is a wasteful number, since it uses less digits than its factorization.

121212200211200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57004 (or 56985 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121212200211200 its reverse (2112002212121), we get a palindrome (123324202423321).

The spelling of 121212200211200 in words is "one hundred twenty-one trillion, two hundred twelve billion, two hundred million, two hundred eleven thousand, two hundred".