212211371 has 2 divisors, whose sum is σ = 212211372. Its totient is φ = 212211370.

The previous prime is 212211343. The next prime is 212211397. The reversal of 212211371 is 173112212.

212211371 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 a de Polignac number, because none of the positive numbers 2^k-212211371 is a prime.

It is not a weakly prime, because it can be changed into another prime (212211331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106105685 + 106105686.

It is an arithmetic number, because the mean of its divisors is an integer number (106105686).

Almost surely, 2^212211371 is an apocalyptic number.

212211371 is a deficient number, since it is larger than the sum of its proper divisors (1).

212211371 is an equidigital number, since it uses as much as digits as its factorization.

212211371 is an evil number, because the sum of its binary digits is even.

The product of its digits is 168, while the sum is 20.

The square root of 212211371 is about 14567.4764801595. The cubic root of 212211371 is about 596.4712979723.

Adding to 212211371 its reverse (173112212), we get a palindrome (385323583).

The spelling of 212211371 in words is "two hundred twelve million, two hundred eleven thousand, three hundred seventy-one".