200020012120221 has 64 divisors (see below), whose sum is σ = 307089919180800. Its totient is φ = 115158717273600.

The previous prime is 200020012120211. The next prime is 200020012120241. The reversal of 200020012120221 is 122021210020002.

It is not a de Polignac number, because 200020012120221 - 2⁹ = 200020012119709 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 200020012120221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200020012120211) 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, 45501021 + ... + 49702946.

It is an arithmetic number, because the mean of its divisors is an integer number (4798279987200).

Almost surely, 2^{200020012120221} is an apocalyptic number.

It is an amenable number.

200020012120221 is a deficient number, since it is larger than the sum of its proper divisors (107069907060579).

200020012120221 is a wasteful number, since it uses less digits than its factorization.

200020012120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95204090.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 200020012120221 its reverse (122021210020002), we get a palindrome (322041222140223).

The spelling of 200020012120221 in words is "two hundred trillion, twenty billion, twelve million, one hundred twenty thousand, two hundred twenty-one".