20123220023 has 8 divisors (see below), whose sum is σ = 20602243200. Its totient is φ = 19644698808.

The previous prime is 20123220001. The next prime is 20123220037. The reversal of 20123220023 is 32002232102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20123220023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20123219983 and 20123220010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123220083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43733 + ... + 205326.

It is an arithmetic number, because the mean of its divisors is an integer number (2575280400).

Almost surely, 2^20123220023 is an apocalyptic number.

20123220023 is a deficient number, since it is larger than the sum of its proper divisors (479023177).

20123220023 is a wasteful number, since it uses less digits than its factorization.

20123220023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250981.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 20123220023 its reverse (32002232102), we get a palindrome (52125452125).

The spelling of 20123220023 in words is "twenty billion, one hundred twenty-three million, two hundred twenty thousand, twenty-three".