200021102121212 has 12 divisors (see below), whose sum is σ = 365255925612816. Its totient is φ = 95662266231840.

The previous prime is 200021102121209. The next prime is 200021102121221. The reversal of 200021102121212 is 212121201120002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1087071207089 + ... + 1087071207272.

It is an arithmetic number, because the mean of its divisors is an integer number (30437993801068).

Almost surely, 2^{200021102121212} is an apocalyptic number.

It is an amenable number.

200021102121212 is a deficient number, since it is larger than the sum of its proper divisors (165234823491604).

200021102121212 is a wasteful number, since it uses less digits than its factorization.

200021102121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2174142414388 (or 2174142414386 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 200021102121212 its reverse (212121201120002), we get a palindrome (412142303241214).

The spelling of 200021102121212 in words is "two hundred trillion, twenty-one billion, one hundred two million, one hundred twenty-one thousand, two hundred twelve".