200021001212 has 48 divisors (see below), whose sum is σ = 353894694720. Its totient is φ = 98915461632.

The previous prime is 200021001197. The next prime is 200021001217. The reversal of 200021001212 is 212100120002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 200021001193 and 200021001202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200021001217) 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, 203479673 + ... + 203480655.

It is an arithmetic number, because the mean of its divisors is an integer number (7372806140).

Almost surely, 2^200021001212 is an apocalyptic number.

It is an amenable number.

200021001212 is a deficient number, since it is larger than the sum of its proper divisors (153873693508).

200021001212 is a wasteful number, since it uses less digits than its factorization.

200021001212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2310 (or 2308 counting only the distinct ones).

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

Adding to 200021001212 its reverse (212100120002), we get a palindrome (412121121214).

The spelling of 200021001212 in words is "two hundred billion, twenty-one million, one thousand, two hundred twelve".