212257219 has 2 divisors, whose sum is σ = 212257220. Its totient is φ = 212257218.

The previous prime is 212257169. The next prime is 212257229. The reversal of 212257219 is 912752212.

212257219 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 212257219 - 2¹³ = 212249027 is a prime.

It is a super-2 number, since 2×212257219² = 90106254035227922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (212257229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106128609 + 106128610.

It is an arithmetic number, because the mean of its divisors is an integer number (106128610).

Almost surely, 2^212257219 is an apocalyptic number.

212257219 is a deficient number, since it is larger than the sum of its proper divisors (1).

212257219 is an equidigital number, since it uses as much as digits as its factorization.

212257219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 31.

The square root of 212257219 is about 14569.0500376655. The cubic root of 212257219 is about 596.5142505039.

The spelling of 212257219 in words is "two hundred twelve million, two hundred fifty-seven thousand, two hundred nineteen".