200121112122 has 32 divisors (see below), whose sum is σ = 413189512512. Its totient is φ = 64567839744.

The previous prime is 200121112117. The next prime is 200121112127. The reversal of 200121112122 is 221211121002.

200121112122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (200121112117) and next prime (200121112127).

It is not an unprimeable number, because it can be changed into a prime (200121112127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2292508 + ... + 2378199.

It is an arithmetic number, because the mean of its divisors is an integer number (12912172266).

Almost surely, 2^200121112122 is an apocalyptic number.

200121112122 is an abundant number, since it is smaller than the sum of its proper divisors (213068400390).

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

200121112122 is a wasteful number, since it uses less digits than its factorization.

200121112122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4670942.

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

Adding to 200121112122 its reverse (221211121002), we get a palindrome (421332233124).

The spelling of 200121112122 in words is "two hundred billion, one hundred twenty-one million, one hundred twelve thousand, one hundred twenty-two".