220221121221101 has 24 divisors (see below), whose sum is σ = 300961532307744. Its totient is φ = 158400806467680.

The previous prime is 220221121221089. The next prime is 220221121221149. The reversal of 220221121221101 is 101122121122022.

It is not a de Polignac number, because 220221121221101 - 2²² = 220221117026797 is a prime.

It is a super-2 number, since 2×220221121221101² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220221121221181) 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, 15714358715 + ... + 15714372728.

It is an arithmetic number, because the mean of its divisors is an integer number (12540063846156).

Almost surely, 2^{220221121221101} is an apocalyptic number.

It is an amenable number.

220221121221101 is a deficient number, since it is larger than the sum of its proper divisors (80740411086643).

220221121221101 is a wasteful number, since it uses less digits than its factorization.

220221121221101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31428731481 (or 31428731474 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 220221121221101 its reverse (101122121122022), we get a palindrome (321343242343123).

The spelling of 220221121221101 in words is "two hundred twenty trillion, two hundred twenty-one billion, one hundred twenty-one million, two hundred twenty-one thousand, one hundred one".