12021424127 has 8 divisors (see below), whose sum is σ = 12677531760. Its totient is φ = 11367656640.

The previous prime is 12021424123. The next prime is 12021424133. The reversal of 12021424127 is 72142412021.

It is a happy number.

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 12021424127 - 2² = 12021424123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12021424096 and 12021424105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021424123) 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, 574478 + ... + 595035.

It is an arithmetic number, because the mean of its divisors is an integer number (1584691470).

Almost surely, 2^12021424127 is an apocalyptic number.

12021424127 is a deficient number, since it is larger than the sum of its proper divisors (656107633).

12021424127 is a wasteful number, since it uses less digits than its factorization.

12021424127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1170073.

The product of its (nonzero) digits is 1792, while the sum is 26.

Adding to 12021424127 its reverse (72142412021), we get a palindrome (84163836148).

The spelling of 12021424127 in words is "twelve billion, twenty-one million, four hundred twenty-four thousand, one hundred twenty-seven".