220102210221 has 16 divisors (see below), whose sum is σ = 294871105536. Its totient is φ = 146034443376.

The previous prime is 220102210219. The next prime is 220102210249. The reversal of 220102210221 is 122012201022.

It is not a de Polignac number, because 220102210221 - 2¹ = 220102210219 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 220102210221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220102210261) 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, 2351116 + ... + 2442938.

It is an arithmetic number, because the mean of its divisors is an integer number (18429444096).

Almost surely, 2^220102210221 is an apocalyptic number.

It is an amenable number.

220102210221 is a deficient number, since it is larger than the sum of its proper divisors (74768895315).

220102210221 is a wasteful number, since it uses less digits than its factorization.

220102210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95632.

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

Adding to 220102210221 its reverse (122012201022), we get a palindrome (342114411243).

The spelling of 220102210221 in words is "two hundred twenty billion, one hundred two million, two hundred ten thousand, two hundred twenty-one".