2103123101 has 4 divisors (see below), whose sum is σ = 2123946204. Its totient is φ = 2082300000.

The previous prime is 2103123097. The next prime is 2103123103. The reversal of 2103123101 is 1013213012.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2036716900 + 66406201 = 45130^2 + 8149^2 .

It is a cyclic number.

It is not a de Polignac number, because 2103123101 - 2² = 2103123097 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 (2103123103) 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, 10411400 + ... + 10411601.

It is an arithmetic number, because the mean of its divisors is an integer number (530986551).

Almost surely, 2^2103123101 is an apocalyptic number.

It is an amenable number.

2103123101 is a deficient number, since it is larger than the sum of its proper divisors (20823103).

2103123101 is a wasteful number, since it uses less digits than its factorization.

2103123101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20823102.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 2103123101 is about 45859.8201152163. The cubic root of 2103123101 is about 1281.2136724628.

Adding to 2103123101 its reverse (1013213012), we get a palindrome (3116336113).

The spelling of 2103123101 in words is "two billion, one hundred three million, one hundred twenty-three thousand, one hundred one".