123212010123 has 24 divisors (see below), whose sum is σ = 180585991872. Its totient is φ = 80943706368.

The previous prime is 123212010109. The next prime is 123212010143. The reversal of 123212010123 is 321010212321.

It is not a de Polignac number, because 123212010123 - 2⁴ = 123212010107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123212010096 and 123212010105.

It is not an unprimeable number, because it can be changed into a prime (123212010143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 174211 + ... + 526092.

It is an arithmetic number, because the mean of its divisors is an integer number (7524416328).

Almost surely, 2^123212010123 is an apocalyptic number.

123212010123 is a deficient number, since it is larger than the sum of its proper divisors (57373981749).

123212010123 is a wasteful number, since it uses less digits than its factorization.

123212010123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700595 (or 700592 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 123212010123 its reverse (321010212321), we get a palindrome (444222222444).

The spelling of 123212010123 in words is "one hundred twenty-three billion, two hundred twelve million, ten thousand, one hundred twenty-three".