10201111012221 has 16 divisors (see below), whose sum is σ = 14061599499648. Its totient is φ = 6573116088000.

The previous prime is 10201111012207. The next prime is 10201111012247. The reversal of 10201111012221 is 12221011110201.

It is a happy number.

It is not a de Polignac number, because 10201111012221 - 2¹⁵ = 10201110979453 is a prime.

It is a super-2 number, since 2×10201111012221² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10201111012221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10201111012201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 304294170 + ... + 304327691.

It is an arithmetic number, because the mean of its divisors is an integer number (878849968728).

Almost surely, 2^{10201111012221} is an apocalyptic number.

It is an amenable number.

10201111012221 is a deficient number, since it is larger than the sum of its proper divisors (3860488487427).

10201111012221 is a wasteful number, since it uses less digits than its factorization.

10201111012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608622052.

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

Adding to 10201111012221 its reverse (12221011110201), we get a palindrome (22422122122422).

The spelling of 10201111012221 in words is "ten trillion, two hundred one billion, one hundred eleven million, twelve thousand, two hundred twenty-one".