2215212361 has 2 divisors, whose sum is σ = 2215212362. Its totient is φ = 2215212360.

The previous prime is 2215212343. The next prime is 2215212371. The reversal of 2215212361 is 1632125122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1897125136 + 318087225 = 43556^2 + 17835^2 .

It is a cyclic number.

It is not a de Polignac number, because 2215212361 - 2¹⁷ = 2215081289 is a prime.

It is not a weakly prime, because it can be changed into another prime (2215212371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1107606180 + 1107606181.

It is an arithmetic number, because the mean of its divisors is an integer number (1107606181).

Almost surely, 2^2215212361 is an apocalyptic number.

It is an amenable number.

2215212361 is a deficient number, since it is larger than the sum of its proper divisors (1).

2215212361 is an equidigital number, since it uses as much as digits as its factorization.

2215212361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 25.

The square root of 2215212361 is about 47066.0425466174. The cubic root of 2215212361 is about 1303.5823011422.

Adding to 2215212361 its reverse (1632125122), we get a palindrome (3847337483).

The spelling of 2215212361 in words is "two billion, two hundred fifteen million, two hundred twelve thousand, three hundred sixty-one".