123213422505 has 8 divisors (see below), whose sum is σ = 197141476032. Its totient is φ = 65713825328.

The previous prime is 123213422441. The next prime is 123213422539. The reversal of 123213422505 is 505224312321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123213422505 - 2⁶ = 123213422441 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4107114069 + ... + 4107114098.

It is an arithmetic number, because the mean of its divisors is an integer number (24642684504).

Almost surely, 2^123213422505 is an apocalyptic number.

123213422505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123213422505 is a deficient number, since it is larger than the sum of its proper divisors (73928053527).

123213422505 is an equidigital number, since it uses as much as digits as its factorization.

123213422505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8214228175.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 123213422505 its reverse (505224312321), we get a palindrome (628437734826).

The spelling of 123213422505 in words is "one hundred twenty-three billion, two hundred thirteen million, four hundred twenty-two thousand, five hundred five".