220122201101221 has 4 divisors (see below), whose sum is σ = 220122417841632. Its totient is φ = 220121984360812.

The previous prime is 220122201101197. The next prime is 220122201101239. The reversal of 220122201101221 is 122101102221022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 220122201101221 - 2⁵ = 220122201101189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220122201108221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106839595 + ... + 108880408.

It is an arithmetic number, because the mean of its divisors is an integer number (55030604460408).

Almost surely, 2^{220122201101221} is an apocalyptic number.

It is an amenable number.

220122201101221 is a deficient number, since it is larger than the sum of its proper divisors (216740411).

220122201101221 is a wasteful number, since it uses less digits than its factorization.

220122201101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216740410.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 220122201101221 its reverse (122101102221022), we get a palindrome (342223303322243).

The spelling of 220122201101221 in words is "two hundred twenty trillion, one hundred twenty-two billion, two hundred one million, one hundred one thousand, two hundred twenty-one".