220121230223 has 2 divisors, whose sum is σ = 220121230224. Its totient is φ = 220121230222.

The previous prime is 220121230193. The next prime is 220121230229. The reversal of 220121230223 is 322032121022.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220121230223 - 2¹⁶ = 220121164687 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220121230195 and 220121230204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220121230229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110060615111 + 110060615112.

It is an arithmetic number, because the mean of its divisors is an integer number (110060615112).

Almost surely, 2^220121230223 is an apocalyptic number.

220121230223 is a deficient number, since it is larger than the sum of its proper divisors (1).

220121230223 is an equidigital number, since it uses as much as digits as its factorization.

220121230223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 220121230223 its reverse (322032121022), we get a palindrome (542153351245).

The spelling of 220121230223 in words is "two hundred twenty billion, one hundred twenty-one million, two hundred thirty thousand, two hundred twenty-three".