121001120212200 has 192 divisors, whose sum is σ = 380861184038400. Its totient is φ = 31775178720000.

The previous prime is 121001120212177. The next prime is 121001120212229. The reversal of 121001120212200 is 2212021100121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 121001120212200.

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, 5593075 + ... + 16531325.

It is an arithmetic number, because the mean of its divisors is an integer number (1983652000200).

Almost surely, 2^{121001120212200} is an apocalyptic number.

121001120212200 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 121001120212200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190430592019200).

121001120212200 is an abundant number, since it is smaller than the sum of its proper divisors (259860063826200).

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

121001120212200 is a wasteful number, since it uses less digits than its factorization.

121001120212200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10938552 (or 10938543 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121001120212200 its reverse (2212021100121), we get a palindrome (123213141312321).

The spelling of 121001120212200 in words is "one hundred twenty-one trillion, one billion, one hundred twenty million, two hundred twelve thousand, two hundred".