123212120303 has 4 divisors (see below), whose sum is σ = 129696968760. Its totient is φ = 116727271848.

The previous prime is 123212120299. The next prime is 123212120323. The reversal of 123212120303 is 303021212321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 303021212321 = 19 ⋅15948484859.

It is a cyclic number.

It is not a de Polignac number, because 123212120303 - 2² = 123212120299 is a prime.

It is a super-3 number, since 3×123212120303³ (a number of 34 digits) contains 333 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 (123212120323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3242424200 + ... + 3242424237.

It is an arithmetic number, because the mean of its divisors is an integer number (32424242190).

Almost surely, 2^123212120303 is an apocalyptic number.

123212120303 is a deficient number, since it is larger than the sum of its proper divisors (6484848457).

123212120303 is an equidigital number, since it uses as much as digits as its factorization.

123212120303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6484848456.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 123212120303 its reverse (303021212321), we get a palindrome (426233332624).

The spelling of 123212120303 in words is "one hundred twenty-three billion, two hundred twelve million, one hundred twenty thousand, three hundred three".