2105012250 has 192 divisors, whose sum is σ = 6575976576. Its totient is φ = 480192000.

The previous prime is 2105012243. The next prime is 2105012257. The reversal of 2105012250 is 522105012.

It is an interprime number because it is at equal distance from previous prime (2105012243) and next prime (2105012257).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105012257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 418249 + ... + 423251.

It is an arithmetic number, because the mean of its divisors is an integer number (34249878).

Almost surely, 2^2105012250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2105012250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3287988288).

2105012250 is an abundant number, since it is smaller than the sum of its proper divisors (4470964326).

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

2105012250 is a wasteful number, since it uses less digits than its factorization.

2105012250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5054 (or 5041 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 2105012250 is about 45880.4124872478. The cubic root of 2105012250 is about 1281.5971781758.

Adding to 2105012250 its reverse (522105012), we get a palindrome (2627117262).

The spelling of 2105012250 in words is "two billion, one hundred five million, twelve thousand, two hundred fifty".