211215413 has 2 divisors, whose sum is σ = 211215414. Its totient is φ = 211215412.

The previous prime is 211215401. The next prime is 211215451. The reversal of 211215413 is 314512112.

211215413 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 209467729 + 1747684 = 14473^2 + 1322^2 .

It is a cyclic number.

It is not a de Polignac number, because 211215413 - 2¹⁴ = 211199029 is a prime.

It is a super-2 number, since 2×211215413² = 89223901377521138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211215013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105607706 + 105607707.

It is an arithmetic number, because the mean of its divisors is an integer number (105607707).

Almost surely, 2^211215413 is an apocalyptic number.

It is an amenable number.

211215413 is a deficient number, since it is larger than the sum of its proper divisors (1).

211215413 is an equidigital number, since it uses as much as digits as its factorization.

211215413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 240, while the sum is 20.

The square root of 211215413 is about 14533.2519760720. The cubic root of 211215413 is about 595.5367075463.

Adding to 211215413 its reverse (314512112), we get a palindrome (525727525).

The spelling of 211215413 in words is "two hundred eleven million, two hundred fifteen thousand, four hundred thirteen".