201121104 has 20 divisors (see below), whose sum is σ = 519562976. Its totient is φ = 67040352.

The previous prime is 201121103. The next prime is 201121111. The reversal of 201121104 is 401121102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 201121104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201121103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2094964 + ... + 2095059.

Almost surely, 2^201121104 is an apocalyptic number.

201121104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

201121104 is an abundant number, since it is smaller than the sum of its proper divisors (318441872).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201121104 is a wasteful number, since it uses less digits than its factorization.

201121104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4190034 (or 4190028 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 201121104 is about 14181.7172443960. The cubic root of 201121104 is about 585.8942215700.

Adding to 201121104 its reverse (401121102), we get a palindrome (602242206).

The spelling of 201121104 in words is "two hundred one million, one hundred twenty-one thousand, one hundred four".