200001020200121 has 16 divisors (see below), whose sum is σ = 229250381193600. Its totient is φ = 170921585237760.

The previous prime is 200001020200049. The next prime is 200001020200127. The reversal of 200001020200121 is 121002020100002.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-200001020200121 is a prime.

It is a super-4 number, since 4×200001020200121⁴ (a number of 58 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200001020200127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14965376 + ... + 24979281.

It is an arithmetic number, because the mean of its divisors is an integer number (14328148824600).

Almost surely, 2^{200001020200121} is an apocalyptic number.

It is an amenable number.

200001020200121 is a deficient number, since it is larger than the sum of its proper divisors (29249360993479).

200001020200121 is a wasteful number, since it uses less digits than its factorization.

200001020200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39946784.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 200001020200121 its reverse (121002020100002), we get a palindrome (321003040300123).

The spelling of 200001020200121 in words is "two hundred trillion, one billion, twenty million, two hundred thousand, one hundred twenty-one".