2100023500 has 24 divisors (see below), whose sum is σ = 4586452416. Its totient is φ = 840009200.

The previous prime is 2100023479. The next prime is 2100023501. The reversal of 2100023500 is 53200012.

It is not an unprimeable number, because it can be changed into a prime (2100023501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2099524 + ... + 2100523.

It is an arithmetic number, because the mean of its divisors is an integer number (191102184).

Almost surely, 2^2100023500 is an apocalyptic number.

2100023500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2100023500 is an abundant number, since it is smaller than the sum of its proper divisors (2486428916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2100023500 is a wasteful number, since it uses less digits than its factorization.

2100023500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4200066 (or 4200054 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 2100023500 is about 45826.0133548621. The cubic root of 2100023500 is about 1280.5839417332.

Adding to 2100023500 its reverse (53200012), we get a palindrome (2153223512).

The spelling of 2100023500 in words is "two billion, one hundred million, twenty-three thousand, five hundred".