10211211010221 has 16 divisors (see below), whose sum is σ = 14685125770560. Its totient is φ = 6274018990080.

The previous prime is 10211211010207. The next prime is 10211211010229. The reversal of 10211211010221 is 12201011211201.

It is a happy number.

It is not a de Polignac number, because 10211211010221 - 2³¹ = 10209063526573 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10211211010221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10211211010229) 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 15 ways as a sum of consecutive naturals, for example, 204207391 + ... + 204257388.

It is an arithmetic number, because the mean of its divisors is an integer number (917820360660).

Almost surely, 2^{10211211010221} is an apocalyptic number.

It is an amenable number.

10211211010221 is a deficient number, since it is larger than the sum of its proper divisors (4473914760339).

10211211010221 is a wasteful number, since it uses less digits than its factorization.

10211211010221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408465436.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 10211211010221 its reverse (12201011211201), we get a palindrome (22412222221422).

The spelling of 10211211010221 in words is "ten trillion, two hundred eleven billion, two hundred eleven million, ten thousand, two hundred twenty-one".