12021010123 has 8 divisors (see below), whose sum is σ = 12135815280. Its totient is φ = 11906250720.

The previous prime is 12021010103. The next prime is 12021010163. The reversal of 12021010123 is 32101012021.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12021010123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12021010103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 765733 + ... + 781273.

It is an arithmetic number, because the mean of its divisors is an integer number (1516976910).

Almost surely, 2^12021010123 is an apocalyptic number.

12021010123 is a deficient number, since it is larger than the sum of its proper divisors (114805157).

12021010123 is a wasteful number, since it uses less digits than its factorization.

12021010123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22877.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 12021010123 its reverse (32101012021), we get a palindrome (44122022144).

The spelling of 12021010123 in words is "twelve billion, twenty-one million, ten thousand, one hundred twenty-three".