204211240103 has 4 divisors (see below), whose sum is σ = 219919797048. Its totient is φ = 188502683160.

The previous prime is 204211240091. The next prime is 204211240109. The reversal of 204211240103 is 301042112402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 204211240103 - 2⁶ = 204211240039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204211240109) 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, 7854278453 + ... + 7854278478.

It is an arithmetic number, because the mean of its divisors is an integer number (54979949262).

Almost surely, 2^204211240103 is an apocalyptic number.

204211240103 is a deficient number, since it is larger than the sum of its proper divisors (15708556945).

204211240103 is a wasteful number, since it uses less digits than its factorization.

204211240103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15708556944.

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

Adding to 204211240103 its reverse (301042112402), we get a palindrome (505253352505).

The spelling of 204211240103 in words is "two hundred four billion, two hundred eleven million, two hundred forty thousand, one hundred three".