20123214123 has 8 divisors (see below), whose sum is σ = 26836253136. Its totient is φ = 13412825600.

The previous prime is 20123214101. The next prime is 20123214131. The reversal of 20123214123 is 32141232102.

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 20123214123 - 2¹² = 20123210027 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20123214123.

It is not an unprimeable number, because it can be changed into a prime (20123234123) 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, 644838 + ... + 675323.

It is an arithmetic number, because the mean of its divisors is an integer number (3354531642).

Almost surely, 2^20123214123 is an apocalyptic number.

20123214123 is a deficient number, since it is larger than the sum of its proper divisors (6713039013).

20123214123 is a wasteful number, since it uses less digits than its factorization.

20123214123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1325245.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 20123214123 its reverse (32141232102), we get a palindrome (52264446225).

The spelling of 20123214123 in words is "twenty billion, one hundred twenty-three million, two hundred fourteen thousand, one hundred twenty-three".