123355001223 has 16 divisors (see below), whose sum is σ = 182770713600. Its totient is φ = 82226513880.

The previous prime is 123355001221. The next prime is 123355001233. The reversal of 123355001223 is 322100553321.

It is a happy number.

123355001223 is a `hidden beast` number, since 1 + 2 + 3 + 35 + 500 + 122 + 3 = 666.

It is not a de Polignac number, because 123355001223 - 2¹ = 123355001221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123355001221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56023 + ... + 499848.

It is an arithmetic number, because the mean of its divisors is an integer number (11423169600).

Almost surely, 2^123355001223 is an apocalyptic number.

123355001223 is a deficient number, since it is larger than the sum of its proper divisors (59415712377).

123355001223 is an equidigital number, since it uses as much as digits as its factorization.

123355001223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564099 (or 564093 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

Adding to 123355001223 its reverse (322100553321), we get a palindrome (445455554544).

The spelling of 123355001223 in words is "one hundred twenty-three billion, three hundred fifty-five million, one thousand, two hundred twenty-three".