220001201020221 has 16 divisors (see below), whose sum is σ = 293710175884800. Its totient is φ = 146479849946928.

The previous prime is 220001201020217. The next prime is 220001201020243. The reversal of 220001201020221 is 122020102100022.

It is not a de Polignac number, because 220001201020221 - 2² = 220001201020217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220001201020221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220001201020621) 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, 334978800 + ... + 335634918.

It is an arithmetic number, because the mean of its divisors is an integer number (18356885992800).

Almost surely, 2^{220001201020221} is an apocalyptic number.

It is an amenable number.

220001201020221 is a deficient number, since it is larger than the sum of its proper divisors (73708974864579).

220001201020221 is a wasteful number, since it uses less digits than its factorization.

220001201020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798928.

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

Adding to 220001201020221 its reverse (122020102100022), we get a palindrome (342021303120243).

The spelling of 220001201020221 in words is "two hundred twenty trillion, one billion, two hundred one million, twenty thousand, two hundred twenty-one".