220121101013223 has 4 divisors (see below), whose sum is σ = 293494801350968. Its totient is φ = 146747400675480.

The previous prime is 220121101013213. The next prime is 220121101013249. The reversal of 220121101013223 is 322310101121022.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 220121101013223 - 2¹⁰ = 220121101012199 is a prime.

It is a super-2 number, since 2×220121101013223² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220121101013223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220121101013213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36686850168868 + ... + 36686850168873.

It is an arithmetic number, because the mean of its divisors is an integer number (73373700337742).

Almost surely, 2^{220121101013223} is an apocalyptic number.

220121101013223 is a deficient number, since it is larger than the sum of its proper divisors (73373700337745).

220121101013223 is an equidigital number, since it uses as much as digits as its factorization.

220121101013223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73373700337744.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 220121101013223 its reverse (322310101121022), we get a palindrome (542431202134245).

The spelling of 220121101013223 in words is "two hundred twenty trillion, one hundred twenty-one billion, one hundred one million, thirteen thousand, two hundred twenty-three".