200121200202 has 128 divisors (see below), whose sum is σ = 528661997568. Its totient is φ = 48893644800.

The previous prime is 200121200161. The next prime is 200121200207. The reversal of 200121200202 is 202002121002.

It is not an unprimeable number, because it can be changed into a prime (200121200207) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15725202 + ... + 15737922.

It is an arithmetic number, because the mean of its divisors is an integer number (4130171856).

Almost surely, 2^200121200202 is an apocalyptic number.

200121200202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 200121200202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264330998784).

200121200202 is an abundant number, since it is smaller than the sum of its proper divisors (328540797366).

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

200121200202 is a wasteful number, since it uses less digits than its factorization.

200121200202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14764.

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

Adding to 200121200202 its reverse (202002121002), we get a palindrome (402123321204).

The spelling of 200121200202 in words is "two hundred billion, one hundred twenty-one million, two hundred thousand, two hundred two".