204120220023 has 48 divisors (see below), whose sum is σ = 310514999040. Its totient is φ = 132521202576.

The previous prime is 204120220019. The next prime is 204120220043. The reversal of 204120220023 is 320022021402.

It is not a de Polignac number, because 204120220023 - 2² = 204120220019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 204120219978 and 204120220005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204120220043) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17317390 + ... + 17329172.

It is an arithmetic number, because the mean of its divisors is an integer number (6469062480).

Almost surely, 2^204120220023 is an apocalyptic number.

204120220023 is a deficient number, since it is larger than the sum of its proper divisors (106394779017).

204120220023 is a wasteful number, since it uses less digits than its factorization.

204120220023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12225 (or 12176 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 204120220023 its reverse (320022021402), we get a palindrome (524142241425).

The spelling of 204120220023 in words is "two hundred four billion, one hundred twenty million, two hundred twenty thousand, twenty-three".