20210010000221 has 8 divisors (see below), whose sum is σ = 20214911845440. Its totient is φ = 20205108511168.

The previous prime is 20210010000217. The next prime is 20210010000233. The reversal of 20210010000221 is 12200001001202.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20210010000221 - 2² = 20210010000217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20210010009221) 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, 139012250 + ... + 139157556.

It is an arithmetic number, because the mean of its divisors is an integer number (2526863980680).

Almost surely, 2^{20210010000221} is an apocalyptic number.

It is an amenable number.

20210010000221 is a deficient number, since it is larger than the sum of its proper divisors (4901845219).

20210010000221 is a wasteful number, since it uses less digits than its factorization.

20210010000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178083.

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

Adding to 20210010000221 its reverse (12200001001202), we get a palindrome (32410011001423).

The spelling of 20210010000221 in words is "twenty trillion, two hundred ten billion, ten million, two hundred twenty-one", and thus it is an aban number.