2105251300 has 72 divisors (see below), whose sum is σ = 4822677440. Its totient is φ = 795484800.

The previous prime is 2105251241. The next prime is 2105251339. The reversal of 2105251300 is 31525012.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 752905 + ... + 755695.

Almost surely, 2^2105251300 is an apocalyptic number.

2105251300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2105251300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2411338720).

2105251300 is an abundant number, since it is smaller than the sum of its proper divisors (2717426140).

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

2105251300 is a wasteful number, since it uses less digits than its factorization.

2105251300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3221 (or 3214 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 2105251300 is about 45883.0175555183. The cubic root of 2105251300 is about 1281.6456900406.

Adding to 2105251300 its reverse (31525012), we get a palindrome (2136776312).

The spelling of 2105251300 in words is "two billion, one hundred five million, two hundred fifty-one thousand, three hundred".