220211200000221 has 24 divisors (see below), whose sum is σ = 313644840181920. Its totient is φ = 137399824111872.

The previous prime is 220211200000219. The next prime is 220211200000241. The reversal of 220211200000221 is 122000002112022.

It is not a de Polignac number, because 220211200000221 - 2¹ = 220211200000219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220211200000221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220211200000241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 709320106 + ... + 709630491.

It is an arithmetic number, because the mean of its divisors is an integer number (13068535007580).

Almost surely, 2^{220211200000221} is an apocalyptic number.

It is an amenable number.

220211200000221 is a deficient number, since it is larger than the sum of its proper divisors (93433640181699).

220211200000221 is a wasteful number, since it uses less digits than its factorization.

220211200000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1418950813 (or 1418950796 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 220211200000221 its reverse (122000002112022), we get a palindrome (342211202112243).

The spelling of 220211200000221 in words is "two hundred twenty trillion, two hundred eleven billion, two hundred million, two hundred twenty-one", and thus it is an aban number.