2150221201 has 4 divisors (see below), whose sum is σ = 2150329572. Its totient is φ = 2150112832.

The previous prime is 2150221187. The next prime is 2150221207. The reversal of 2150221201 is 1021220512.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 177528976 + 1972692225 = 13324^2 + 44415^2 .

It is a cyclic number.

It is not a de Polignac number, because 2150221201 - 2⁵ = 2150221169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2150221207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14956 + ... + 67261.

It is an arithmetic number, because the mean of its divisors is an integer number (537582393).

Almost surely, 2^2150221201 is an apocalyptic number.

It is an amenable number.

2150221201 is a deficient number, since it is larger than the sum of its proper divisors (108371).

2150221201 is an equidigital number, since it uses as much as digits as its factorization.

2150221201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108370.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 2150221201 is about 46370.4776878565. The cubic root of 2150221201 is about 1290.7071420894.

Adding to 2150221201 its reverse (1021220512), we get a palindrome (3171441713).

The spelling of 2150221201 in words is "two billion, one hundred fifty million, two hundred twenty-one thousand, two hundred one".