2150621013 has 4 divisors (see below), whose sum is σ = 2867494688. Its totient is φ = 1433747340.

The previous prime is 2150620999. The next prime is 2150621069. The reversal of 2150621013 is 3101260512.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2150621013 - 2¹⁸ = 2150358869 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2150621113) 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 3 ways as a sum of consecutive naturals, for example, 358436833 + ... + 358436838.

It is an arithmetic number, because the mean of its divisors is an integer number (716873672).

Almost surely, 2^2150621013 is an apocalyptic number.

It is an amenable number.

2150621013 is a deficient number, since it is larger than the sum of its proper divisors (716873675).

2150621013 is an equidigital number, since it uses as much as digits as its factorization.

2150621013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 716873674.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 2150621013 is about 46374.7885493832. The cubic root of 2150621013 is about 1290.7871351343.

Adding to 2150621013 its reverse (3101260512), we get a palindrome (5251881525).

The spelling of 2150621013 in words is "two billion, one hundred fifty million, six hundred twenty-one thousand, thirteen".