123103112221 has 8 divisors (see below), whose sum is σ = 130264654464. Its totient is φ = 116092339440.

The previous prime is 123103112207. The next prime is 123103112257. The reversal of 123103112221 is 122211301321.

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 123103112221 - 2²¹ = 123101015069 is a prime.

It is a super-2 number, since 2×123103112221² (a number of 23 digits) contains 22 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 (123103112201) 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 7 ways as a sum of consecutive naturals, for example, 37690686 + ... + 37693951.

It is an arithmetic number, because the mean of its divisors is an integer number (16283081808).

Almost surely, 2^123103112221 is an apocalyptic number.

It is an amenable number.

123103112221 is a deficient number, since it is larger than the sum of its proper divisors (7161542243).

123103112221 is an equidigital number, since it uses as much as digits as its factorization.

123103112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75384731.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 123103112221 its reverse (122211301321), we get a palindrome (245314413542).

The spelling of 123103112221 in words is "one hundred twenty-three billion, one hundred three million, one hundred twelve thousand, two hundred twenty-one".