121220020000200 has 192 divisors, whose sum is σ = 410000937278400. Its totient is φ = 29382594841600.

The previous prime is 121220020000139. The next prime is 121220020000201. The reversal of 121220020000200 is 2000020022121.

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

It is not an unprimeable number, because it can be changed into a prime (121220020000201) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 46441054 + ... + 48981746.

It is an arithmetic number, because the mean of its divisors is an integer number (2135421548325).

Almost surely, 2^{121220020000200} is an apocalyptic number.

121220020000200 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 121220020000200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205000468639200).

121220020000200 is an abundant number, since it is smaller than the sum of its proper divisors (288780917278200).

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

121220020000200 is a wasteful number, since it uses less digits than its factorization.

121220020000200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2547952 (or 2547943 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 121220020000200 its reverse (2000020022121), we get a palindrome (123220040022321).

The spelling of 121220020000200 in words is "one hundred twenty-one trillion, two hundred twenty billion, twenty million, two hundred", and thus it is an aban number.