220123124453 has 2 divisors, whose sum is σ = 220123124454. Its totient is φ = 220123124452.

The previous prime is 220123124393. The next prime is 220123124477. The reversal of 220123124453 is 354421321022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 192039397729 + 28083726724 = 438223^2 + 167582^2 .

It is a cyclic number.

It is not a de Polignac number, because 220123124453 - 2²⁸ = 219854688997 is a prime.

It is a super-3 number, since 3×220123124453³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220123124483) 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 as a sum of consecutive naturals, namely, 110061562226 + 110061562227.

It is an arithmetic number, because the mean of its divisors is an integer number (110061562227).

Almost surely, 2^220123124453 is an apocalyptic number.

It is an amenable number.

220123124453 is a deficient number, since it is larger than the sum of its proper divisors (1).

220123124453 is an equidigital number, since it uses as much as digits as its factorization.

220123124453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 220123124453 its reverse (354421321022), we get a palindrome (574544445475).

The spelling of 220123124453 in words is "two hundred twenty billion, one hundred twenty-three million, one hundred twenty-four thousand, four hundred fifty-three".