204410121111 has 48 divisors (see below), whose sum is σ = 345196800000. Its totient is φ = 114128711424.

The previous prime is 204410121089. The next prime is 204410121163. The reversal of 204410121111 is 111121014402.

204410121111 is a `hidden beast` number, since 2 + 0 + 441 + 0 + 1 + 211 + 11 = 666.

It is not a de Polignac number, because 204410121111 - 2¹⁵ = 204410088343 is a prime.

It is a super-2 number, since 2×204410121111² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204410121211) 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, 1716015 + ... + 1831263.

It is an arithmetic number, because the mean of its divisors is an integer number (7191600000).

Almost surely, 2^204410121111 is an apocalyptic number.

204410121111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

204410121111 is a deficient number, since it is larger than the sum of its proper divisors (140786678889).

204410121111 is a wasteful number, since it uses less digits than its factorization.

204410121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115908 (or 115905 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 204410121111 its reverse (111121014402), we get a palindrome (315531135513).

The spelling of 204410121111 in words is "two hundred four billion, four hundred ten million, one hundred twenty-one thousand, one hundred eleven".