20101210010221 has 8 divisors (see below), whose sum is σ = 20318996995200. Its totient is φ = 19884590784432.

The previous prime is 20101210010209. The next prime is 20101210010239. The reversal of 20101210010221 is 12201001210102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20101210010221 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 (20101210010261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 291905185 + ... + 291974038.

It is an arithmetic number, because the mean of its divisors is an integer number (2539874624400).

Almost surely, 2^{20101210010221} is an apocalyptic number.

It is an amenable number.

20101210010221 is a deficient number, since it is larger than the sum of its proper divisors (217786984979).

20101210010221 is a wasteful number, since it uses less digits than its factorization.

20101210010221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583879595.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20101210010221 its reverse (12201001210102), we get a palindrome (32302211220323).

The spelling of 20101210010221 in words is "twenty trillion, one hundred one billion, two hundred ten million, ten thousand, two hundred twenty-one".