212215013 has 2 divisors, whose sum is σ = 212215014. Its totient is φ = 212215012.

The previous prime is 212215001. The next prime is 212215027. The reversal of 212215013 is 310512212.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 165456769 + 46758244 = 12863^2 + 6838^2 .

It is a cyclic number.

It is not a de Polignac number, because 212215013 - 2¹⁸ = 211952869 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212214982 and 212215000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212215033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106107506 + 106107507.

It is an arithmetic number, because the mean of its divisors is an integer number (106107507).

Almost surely, 2^212215013 is an apocalyptic number.

It is an amenable number.

212215013 is a deficient number, since it is larger than the sum of its proper divisors (1).

212215013 is an equidigital number, since it uses as much as digits as its factorization.

212215013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 212215013 is about 14567.6014841154. The cubic root of 212215013 is about 596.4747101929.

Adding to 212215013 its reverse (310512212), we get a palindrome (522727225).

The spelling of 212215013 in words is "two hundred twelve million, two hundred fifteen thousand, thirteen".