2102123204 has 24 divisors (see below), whose sum is σ = 3703747320. Its totient is φ = 1043933184.

The previous prime is 2102123183. The next prime is 2102123209. The reversal of 2102123204 is 4023212012.

It can be written as a sum of positive squares in 4 ways, for example, as 227406400 + 1874716804 = 15080^2 + 43298^2 .

It is not an unprimeable number, because it can be changed into a prime (2102123209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 400952 + ... + 406160.

It is an arithmetic number, because the mean of its divisors is an integer number (154322805).

Almost surely, 2^2102123204 is an apocalyptic number.

It is an amenable number.

2102123204 is a deficient number, since it is larger than the sum of its proper divisors (1601624116).

2102123204 is a wasteful number, since it uses less digits than its factorization.

2102123204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5879 (or 5877 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2102123204 is about 45848.9171518805. The cubic root of 2102123204 is about 1281.0105959391.

Adding to 2102123204 its reverse (4023212012), we get a palindrome (6125335216).

The spelling of 2102123204 in words is "two billion, one hundred two million, one hundred twenty-three thousand, two hundred four".