220020400221 has 8 divisors (see below), whose sum is σ = 293648428320. Its totient is φ = 146536319472.

The previous prime is 220020400207. The next prime is 220020400231. The reversal of 220020400221 is 122004020022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 220020400221 - 2¹⁴ = 220020383837 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220020400221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220020400231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35983270 + ... + 35989383.

It is an arithmetic number, because the mean of its divisors is an integer number (36706053540).

Almost surely, 2^220020400221 is an apocalyptic number.

It is an amenable number.

220020400221 is a deficient number, since it is larger than the sum of its proper divisors (73628028099).

220020400221 is a wasteful number, since it uses less digits than its factorization.

220020400221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71973675.

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 220020400221 its reverse (122004020022), we get a palindrome (342024420243).

The spelling of 220020400221 in words is "two hundred twenty billion, twenty million, four hundred thousand, two hundred twenty-one".