2215120213 has 16 divisors (see below), whose sum is σ = 2395307376. Its totient is φ = 2040663040.

The previous prime is 2215120169. The next prime is 2215120217. The reversal of 2215120213 is 3120215122.

It can be written as a sum of positive squares in 8 ways, for example, as 577056484 + 1638063729 = 24022^2 + 40473^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2215120213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2215120217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 412695 + ... + 418027.

It is an arithmetic number, because the mean of its divisors is an integer number (149706711).

Almost surely, 2^2215120213 is an apocalyptic number.

It is an amenable number.

2215120213 is a deficient number, since it is larger than the sum of its proper divisors (180187163).

2215120213 is a wasteful number, since it uses less digits than its factorization.

2215120213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5864.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 2215120213 is about 47065.0636141077. The cubic root of 2215120213 is about 1303.5642254986.

Adding to 2215120213 its reverse (3120215122), we get a palindrome (5335335335).

The spelling of 2215120213 in words is "two billion, two hundred fifteen million, one hundred twenty thousand, two hundred thirteen".