12103023021 has 8 divisors (see below), whose sum is σ = 16137940320. Its totient is φ = 8068393872.

The previous prime is 12103023019. The next prime is 12103023071. The reversal of 12103023021 is 12032030121.

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

It is not a de Polignac number, because 12103023021 - 2¹ = 12103023019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12103023071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61150 + ... + 167168.

It is an arithmetic number, because the mean of its divisors is an integer number (2017242540).

Almost surely, 2^12103023021 is an apocalyptic number.

It is an amenable number.

12103023021 is a deficient number, since it is larger than the sum of its proper divisors (4034917299).

12103023021 is a wasteful number, since it uses less digits than its factorization.

12103023021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144075.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 12103023021 its reverse (12032030121), we get a palindrome (24135053142).

The spelling of 12103023021 in words is "twelve billion, one hundred three million, twenty-three thousand, twenty-one".