200121111020210 has 16 divisors (see below), whose sum is σ = 369003804711192. Its totient is φ = 78096043324800.

The previous prime is 200121111020209. The next prime is 200121111020219. The reversal of 200121111020210 is 12020111121002.

200121111020210 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 90797629230841 + 109323481789369 = 9528779^2 + 10455787^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (200121111020219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 244050134981 + ... + 244050135800.

Almost surely, 2^{200121111020210} is an apocalyptic number.

200121111020210 is a deficient number, since it is larger than the sum of its proper divisors (168882693690982).

200121111020210 is a wasteful number, since it uses less digits than its factorization.

200121111020210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488100270829.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 200121111020210 its reverse (12020111121002), we get a palindrome (212141222141212).

The spelling of 200121111020210 in words is "two hundred trillion, one hundred twenty-one billion, one hundred eleven million, twenty thousand, two hundred ten".