20012122423 has 8 divisors (see below), whose sum is σ = 20742883200. Its totient is φ = 19284074208.

The previous prime is 20012122421. The next prime is 20012122469. The reversal of 20012122423 is 32422121002.

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 20012122423 - 2¹ = 20012122421 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20012122423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012122421) 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, 663111 + ... + 692632.

It is an arithmetic number, because the mean of its divisors is an integer number (2592860400).

Almost surely, 2^20012122423 is an apocalyptic number.

20012122423 is a deficient number, since it is larger than the sum of its proper divisors (730760777).

20012122423 is a wasteful number, since it uses less digits than its factorization.

20012122423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1356281.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 20012122423 its reverse (32422121002), we get a palindrome (52434243425).

The spelling of 20012122423 in words is "twenty billion, twelve million, one hundred twenty-two thousand, four hundred twenty-three".