2150715221 has 8 divisors (see below), whose sum is σ = 2156906880. Its totient is φ = 2144533888.

The previous prime is 2150715191. The next prime is 2150715223. The reversal of 2150715221 is 1225170512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2150715221 - 2⁶ = 2150715157 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 (2150715223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 592805 + ... + 596421.

It is an arithmetic number, because the mean of its divisors is an integer number (269613360).

Almost surely, 2^2150715221 is an apocalyptic number.

It is an amenable number.

2150715221 is a deficient number, since it is larger than the sum of its proper divisors (6191659).

2150715221 is an equidigital number, since it uses as much as digits as its factorization.

2150715221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5163.

The product of its (nonzero) digits is 1400, while the sum is 26.

The square root of 2150715221 is about 46375.8042625678. The cubic root of 2150715221 is about 1290.8059825119.

Adding to 2150715221 its reverse (1225170512), we get a palindrome (3375885733).

The spelling of 2150715221 in words is "two billion, one hundred fifty million, seven hundred fifteen thousand, two hundred twenty-one".