2102205500 has 48 divisors (see below), whose sum is σ = 4698037344. Its totient is φ = 821318400.

The previous prime is 2102205493. The next prime is 2102205527. The reversal of 2102205500 is 55022012.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 27389 + ... + 70388.

It is an arithmetic number, because the mean of its divisors is an integer number (97875778).

Almost surely, 2^2102205500 is an apocalyptic number.

2102205500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2102205500 is an abundant number, since it is smaller than the sum of its proper divisors (2595831844).

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

2102205500 is a wasteful number, since it uses less digits than its factorization.

2102205500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97839 (or 97827 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 2102205500 is about 45849.8146124933. The cubic root of 2102205500 is about 1281.0273124779.

Adding to 2102205500 its reverse (55022012), we get a palindrome (2157227512).

The spelling of 2102205500 in words is "two billion, one hundred two million, two hundred five thousand, five hundred".