2101207923 has 12 divisors (see below), whose sum is σ = 3037449480. Its totient is φ = 1399710816.

The previous prime is 2101207921. The next prime is 2101207937. The reversal of 2101207923 is 3297021012.

It is not a de Polignac number, because 2101207923 - 2¹ = 2101207921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2101207921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78961 + ... + 102162.

It is an arithmetic number, because the mean of its divisors is an integer number (253120790).

Almost surely, 2^2101207923 is an apocalyptic number.

2101207923 is a deficient number, since it is larger than the sum of its proper divisors (936241557).

2101207923 is a wasteful number, since it uses less digits than its factorization.

2101207923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182418 (or 182415 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 2101207923 is about 45838.9345753149. The cubic root of 2101207923 is about 1280.8246482478.

Adding to 2101207923 its reverse (3297021012), we get a palindrome (5398228935).

The spelling of 2101207923 in words is "two billion, one hundred one million, two hundred seven thousand, nine hundred twenty-three".