215219141 has 2 divisors, whose sum is σ = 215219142. Its totient is φ = 215219140.

The previous prime is 215219131. The next prime is 215219149. The reversal of 215219141 is 141912512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 209236225 + 5982916 = 14465^2 + 2446^2 .

It is a cyclic number.

It is not a de Polignac number, because 215219141 - 2¹⁸ = 214956997 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 215219141.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215219149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107609570 + 107609571.

It is an arithmetic number, because the mean of its divisors is an integer number (107609571).

Almost surely, 2^215219141 is an apocalyptic number.

It is an amenable number.

215219141 is a deficient number, since it is larger than the sum of its proper divisors (1).

215219141 is an equidigital number, since it uses as much as digits as its factorization.

215219141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720, while the sum is 26.

The square root of 215219141 is about 14670.3490415191. The cubic root of 215219141 is about 599.2761093960.

The spelling of 215219141 in words is "two hundred fifteen million, two hundred nineteen thousand, one hundred forty-one".