2215212511 has 2 divisors, whose sum is σ = 2215212512. Its totient is φ = 2215212510.

The previous prime is 2215212487. The next prime is 2215212529. The reversal of 2215212511 is 1152125122.

It is a happy number.

2215212511 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2215212511 - 2¹¹ = 2215210463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2215212541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1107606255 + 1107606256.

It is an arithmetic number, because the mean of its divisors is an integer number (1107606256).

Almost surely, 2^2215212511 is an apocalyptic number.

2215212511 is a deficient number, since it is larger than the sum of its proper divisors (1).

2215212511 is an equidigital number, since it uses as much as digits as its factorization.

2215212511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 400, while the sum is 22.

The square root of 2215212511 is about 47066.0441401229. The cubic root of 2215212511 is about 1303.5823305656.

Adding to 2215212511 its reverse (1152125122), we get a palindrome (3367337633).

The spelling of 2215212511 in words is "two billion, two hundred fifteen million, two hundred twelve thousand, five hundred eleven".