212043361 has 2 divisors, whose sum is σ = 212043362. Its totient is φ = 212043360.

The previous prime is 212043343. The next prime is 212043373. The reversal of 212043361 is 163340212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 154753600 + 57289761 = 12440^2 + 7569^2 .

It is a cyclic number.

It is not a de Polignac number, because 212043361 - 2¹⁵ = 212010593 is a prime.

It is not a weakly prime, because it can be changed into another prime (212043311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106021680 + 106021681.

It is an arithmetic number, because the mean of its divisors is an integer number (106021681).

Almost surely, 2^212043361 is an apocalyptic number.

It is an amenable number.

212043361 is a deficient number, since it is larger than the sum of its proper divisors (1).

212043361 is an equidigital number, since it uses as much as digits as its factorization.

212043361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 212043361 is about 14561.7087252836. The cubic root of 212043361 is about 596.3138455220.

Adding to 212043361 its reverse (163340212), we get a palindrome (375383573).

The spelling of 212043361 in words is "two hundred twelve million, forty-three thousand, three hundred sixty-one".