20210200010221 has 12 divisors (see below), whose sum is σ = 22010917319028. Its totient is φ = 18547733553024.

The previous prime is 20210200010213. The next prime is 20210200010261. The reversal of 20210200010221 is 12201000201202.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 471186144900 + 19739013865321 = 686430^2 + 4442861^2 .

It is not a de Polignac number, because 20210200010221 - 2³ = 20210200010213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20210200010261) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 345597880 + ... + 345656353.

It is an arithmetic number, because the mean of its divisors is an integer number (1834243109919).

Almost surely, 2^{20210200010221} is an apocalyptic number.

It is an amenable number.

20210200010221 is a deficient number, since it is larger than the sum of its proper divisors (1800717308807).

20210200010221 is a wasteful number, since it uses less digits than its factorization.

20210200010221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691254432 (or 691254419 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20210200010221 its reverse (12201000201202), we get a palindrome (32411200211423).

The spelling of 20210200010221 in words is "twenty trillion, two hundred ten billion, two hundred million, ten thousand, two hundred twenty-one".