212540411 has 2 divisors, whose sum is σ = 212540412. Its totient is φ = 212540410.

The previous prime is 212540389. The next prime is 212540423. The reversal of 212540411 is 114045212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212540411 - 2⁶ = 212540347 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (212540711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106270205 + 106270206.

It is an arithmetic number, because the mean of its divisors is an integer number (106270206).

Almost surely, 2^212540411 is an apocalyptic number.

212540411 is a deficient number, since it is larger than the sum of its proper divisors (1).

212540411 is an equidigital number, since it uses as much as digits as its factorization.

212540411 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 212540411 is about 14578.7657570866. The cubic root of 212540411 is about 596.7794208988.

Adding to 212540411 its reverse (114045212), we get a palindrome (326585623).

The spelling of 212540411 in words is "two hundred twelve million, five hundred forty thousand, four hundred eleven".