2152216211 has 4 divisors (see below), whose sum is σ = 2152536672. Its totient is φ = 2151895752.

The previous prime is 2152216181. The next prime is 2152216217. The reversal of 2152216211 is 1126122512.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2152216211 - 2¹⁰ = 2152215187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2152216217) 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, 149936 + ... + 163661.

It is an arithmetic number, because the mean of its divisors is an integer number (538134168).

Almost surely, 2^2152216211 is an apocalyptic number.

2152216211 is a deficient number, since it is larger than the sum of its proper divisors (320461).

2152216211 is an equidigital number, since it uses as much as digits as its factorization.

2152216211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320460.

The product of its digits is 480, while the sum is 23.

The square root of 2152216211 is about 46391.9843399698. The cubic root of 2152216211 is about 1291.1061983504.

Adding to 2152216211 its reverse (1126122512), we get a palindrome (3278338723).

The spelling of 2152216211 in words is "two billion, one hundred fifty-two million, two hundred sixteen thousand, two hundred eleven".