20223143121 has 4 divisors (see below), whose sum is σ = 26964190832. Its totient is φ = 13482095412.

The previous prime is 20223143111. The next prime is 20223143123. The reversal of 20223143121 is 12134132202.

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 not a de Polignac number, because 20223143121 - 2⁵ = 20223143089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20223143123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3370523851 + ... + 3370523856.

It is an arithmetic number, because the mean of its divisors is an integer number (6741047708).

Almost surely, 2^20223143121 is an apocalyptic number.

It is an amenable number.

20223143121 is a deficient number, since it is larger than the sum of its proper divisors (6741047711).

20223143121 is an equidigital number, since it uses as much as digits as its factorization.

20223143121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6741047710.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 20223143121 its reverse (12134132202), we get a palindrome (32357275323).

The spelling of 20223143121 in words is "twenty billion, two hundred twenty-three million, one hundred forty-three thousand, one hundred twenty-one".