20023112123 has 8 divisors (see below), whose sum is σ = 23097422592. Its totient is φ = 17002268136.

The previous prime is 20023112113. The next prime is 20023112129. The reversal of 20023112123 is 32121132002.

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

It is not a de Polignac number, because 20023112123 - 2⁴ = 20023112107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20023112129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13365815 + ... + 13367312.

It is an arithmetic number, because the mean of its divisors is an integer number (2887177824).

Almost surely, 2^20023112123 is an apocalyptic number.

20023112123 is a deficient number, since it is larger than the sum of its proper divisors (3074310469).

20023112123 is a wasteful number, since it uses less digits than its factorization.

20023112123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26733241.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20023112123 its reverse (32121132002), we get a palindrome (52144244125).

The spelling of 20023112123 in words is "twenty billion, twenty-three million, one hundred twelve thousand, one hundred twenty-three".