10211201010221 has 4 divisors (see below), whose sum is σ = 10211238122652. Its totient is φ = 10211163897792.

The previous prime is 10211201010187. The next prime is 10211201010239. The reversal of 10211201010221 is 12201010211201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4933218577225 + 5277982432996 = 2221085^2 + 2297386^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10211201010221 is a prime.

It is a super-2 number, since 2×10211201010221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10211201010196 and 10211201010205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10211201015221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18140396 + ... + 18694821.

It is an arithmetic number, because the mean of its divisors is an integer number (2552809530663).

Almost surely, 2^{10211201010221} is an apocalyptic number.

It is an amenable number.

10211201010221 is a deficient number, since it is larger than the sum of its proper divisors (37112431).

10211201010221 is an equidigital number, since it uses as much as digits as its factorization.

10211201010221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37112430.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 10211201010221 its reverse (12201010211201), we get a palindrome (22412211221422).

The spelling of 10211201010221 in words is "ten trillion, two hundred eleven billion, two hundred one million, ten thousand, two hundred twenty-one".