2121132103 has 4 divisors (see below), whose sum is σ = 2121247240. Its totient is φ = 2121016968.

The previous prime is 2121132073. The next prime is 2121132121. The reversal of 2121132103 is 3012311212.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2121132103 - 2¹⁷ = 2121001031 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 (2121132173) 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 3 ways as a sum of consecutive naturals, for example, 23025 + ... + 69082.

It is an arithmetic number, because the mean of its divisors is an integer number (530311810).

Almost surely, 2^2121132103 is an apocalyptic number.

2121132103 is a deficient number, since it is larger than the sum of its proper divisors (115137).

2121132103 is an equidigital number, since it uses as much as digits as its factorization.

2121132103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115136.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2121132103 is about 46055.7499450394. The cubic root of 2121132103 is about 1284.8602861014.

Adding to 2121132103 its reverse (3012311212), we get a palindrome (5133443315).

The spelling of 2121132103 in words is "two billion, one hundred twenty-one million, one hundred thirty-two thousand, one hundred three".