2121104433 has 16 divisors (see below), whose sum is σ = 3422286720. Its totient is φ = 1140761856.

The previous prime is 2121104431. The next prime is 2121104477. The reversal of 2121104433 is 3344011212.

It is not a de Polignac number, because 2121104433 - 2¹ = 2121104431 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (2121104431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2970378 + ... + 2971091.

It is an arithmetic number, because the mean of its divisors is an integer number (213892920).

Almost surely, 2^2121104433 is an apocalyptic number.

It is an amenable number.

2121104433 is a deficient number, since it is larger than the sum of its proper divisors (1301182287).

2121104433 is a wasteful number, since it uses less digits than its factorization.

2121104433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5941496.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 2121104433 is about 46055.4495472577. The cubic root of 2121104433 is about 1284.8546991102.

Adding to 2121104433 its reverse (3344011212), we get a palindrome (5465115645).

The spelling of 2121104433 in words is "two billion, one hundred twenty-one million, one hundred four thousand, four hundred thirty-three".