220001011102221 has 32 divisors (see below), whose sum is σ = 307744122416640. Its totient is φ = 139634599251456.

The previous prime is 220001011102211. The next prime is 220001011102237. The reversal of 220001011102221 is 122201110100022.

220001011102221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 220001011102221 - 2¹⁵ = 220001011069453 is a prime.

It is a super-2 number, since 2×220001011102221² (a number of 29 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 220001011102221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220001011102211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17510535 + ... + 27324363.

It is an arithmetic number, because the mean of its divisors is an integer number (9617003825520).

Almost surely, 2^{220001011102221} is an apocalyptic number.

It is an amenable number.

220001011102221 is a deficient number, since it is larger than the sum of its proper divisors (87743111314419).

220001011102221 is a wasteful number, since it uses less digits than its factorization.

220001011102221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9818213.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 220001011102221 its reverse (122201110100022), we get a palindrome (342202121202243).

The spelling of 220001011102221 in words is "two hundred twenty trillion, one billion, eleven million, one hundred two thousand, two hundred twenty-one".