123210122 has 16 divisors (see below), whose sum is σ = 211602240. Its totient is φ = 52708128.

The previous prime is 123210121. The next prime is 123210133. The reversal of 123210122 is 221012321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 123210097 and 123210106.

It is not an unprimeable number, because it can be changed into a prime (123210121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233 + ... + 15699.

It is an arithmetic number, because the mean of its divisors is an integer number (13225140).

Almost surely, 2^123210122 is an apocalyptic number.

123210122 is a deficient number, since it is larger than the sum of its proper divisors (88392118).

123210122 is a wasteful number, since it uses less digits than its factorization.

123210122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16045.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 123210122 is about 11100.0054954941. The cubic root of 123210122 is about 497.6020137091.

Adding to 123210122 its reverse (221012321), we get a palindrome (344222443).

The spelling of 123210122 in words is "one hundred twenty-three million, two hundred ten thousand, one hundred twenty-two".