2101228923 has 16 divisors (see below), whose sum is σ = 2815488000. Its totient is φ = 1393909440.

The previous prime is 2101228889. The next prime is 2101228931. The reversal of 2101228923 is 3298221012.

It is not a de Polignac number, because 2101228923 - 2¹⁴ = 2101212539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2101228933) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 874678 + ... + 877076.

It is an arithmetic number, because the mean of its divisors is an integer number (175968000).

Almost surely, 2^2101228923 is an apocalyptic number.

2101228923 is a deficient number, since it is larger than the sum of its proper divisors (714259077).

2101228923 is a wasteful number, since it uses less digits than its factorization.

2101228923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3722.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 2101228923 is about 45839.1636376581. The cubic root of 2101228923 is about 1280.8289151947.

Adding to 2101228923 its reverse (3298221012), we get a palindrome (5399449935).

The spelling of 2101228923 in words is "two billion, one hundred one million, two hundred twenty-eight thousand, nine hundred twenty-three".