20123120204 has 12 divisors (see below), whose sum is σ = 38416865928. Its totient is φ = 9146872800.

The previous prime is 20123120119. The next prime is 20123120219. The reversal of 20123120204 is 40202132102.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 228671777 + ... + 228671864.

It is an arithmetic number, because the mean of its divisors is an integer number (3201405494).

Almost surely, 2^20123120204 is an apocalyptic number.

It is an amenable number.

20123120204 is a deficient number, since it is larger than the sum of its proper divisors (18293745724).

20123120204 is a wasteful number, since it uses less digits than its factorization.

20123120204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457343656 (or 457343654 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 20123120204 its reverse (40202132102), we get a palindrome (60325252306).

The spelling of 20123120204 in words is "twenty billion, one hundred twenty-three million, one hundred twenty thousand, two hundred four".