2121015250 has 16 divisors (see below), whose sum is σ = 3970541016. Its totient is φ = 848406000.

The previous prime is 2121015229. The next prime is 2121015271. The reversal of 2121015250 is 525101212.

It is an interprime number because it is at equal distance from previous prime (2121015229) and next prime (2121015271).

It can be written as a sum of positive squares in 4 ways, for example, as 458088409 + 1662926841 = 21403^2 + 40779^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4241781 + ... + 4242280.

Almost surely, 2^2121015250 is an apocalyptic number.

2121015250 is a deficient number, since it is larger than the sum of its proper divisors (1849525766).

2121015250 is an equidigital number, since it uses as much as digits as its factorization.

2121015250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8484078 (or 8484068 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 2121015250 is about 46054.4813237539. The cubic root of 2121015250 is about 1284.8366913842.

Adding to 2121015250 its reverse (525101212), we get a palindrome (2646116462).

The spelling of 2121015250 in words is "two billion, one hundred twenty-one million, fifteen thousand, two hundred fifty".