20112312002123 has 12 divisors (see below), whose sum is σ = 22820047959744. Its totient is φ = 17694116127600.

The previous prime is 20112312002119. The next prime is 20112312002129. The reversal of 20112312002123 is 32120021321102.

It is not a de Polignac number, because 20112312002123 - 2² = 20112312002119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20112312002095 and 20112312002104.

It is not an unprimeable number, because it can be changed into a prime (20112312002129) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2680922936 + ... + 2680930437.

It is an arithmetic number, because the mean of its divisors is an integer number (1901670663312).

Almost surely, 2^{20112312002123} is an apocalyptic number.

20112312002123 is a deficient number, since it is larger than the sum of its proper divisors (2707735957621).

20112312002123 is a wasteful number, since it uses less digits than its factorization.

20112312002123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5361853426 (or 5361853415 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 20112312002123 its reverse (32120021321102), we get a palindrome (52232333323225).

The spelling of 20112312002123 in words is "twenty trillion, one hundred twelve billion, three hundred twelve million, two thousand, one hundred twenty-three".