204042101213 has 4 divisors (see below), whose sum is σ = 204219376128. Its totient is φ = 203864826300.

The previous prime is 204042101189. The next prime is 204042101269. The reversal of 204042101213 is 312101240402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 204042101213 - 2⁸ = 204042100957 is a prime.

It is a super-2 number, since 2×204042101213² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204042101113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88635731 + ... + 88638032.

It is an arithmetic number, because the mean of its divisors is an integer number (51054844032).

Almost surely, 2^204042101213 is an apocalyptic number.

It is an amenable number.

204042101213 is a deficient number, since it is larger than the sum of its proper divisors (177274915).

204042101213 is a wasteful number, since it uses less digits than its factorization.

204042101213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177274914.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 204042101213 its reverse (312101240402), we get a palindrome (516143341615).

The spelling of 204042101213 in words is "two hundred four billion, forty-two million, one hundred one thousand, two hundred thirteen".