123535512223 has 4 divisors (see below), whose sum is σ = 123763859368. Its totient is φ = 123307165080.

The previous prime is 123535512211. The next prime is 123535512253. The reversal of 123535512223 is 322215535321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322215535321 = 42923 ⋅7506827.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123535512223 is a prime.

It is a super-2 number, since 2×123535512223² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123535512203) 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, 114172761 + ... + 114173842.

It is an arithmetic number, because the mean of its divisors is an integer number (30940964842).

Almost surely, 2^123535512223 is an apocalyptic number.

123535512223 is a deficient number, since it is larger than the sum of its proper divisors (228347145).

123535512223 is an equidigital number, since it uses as much as digits as its factorization.

123535512223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228347144.

The product of its digits is 54000, while the sum is 34.

The spelling of 123535512223 in words is "one hundred twenty-three billion, five hundred thirty-five million, five hundred twelve thousand, two hundred twenty-three".