212237071 has 2 divisors, whose sum is σ = 212237072. Its totient is φ = 212237070.

The previous prime is 212237063. The next prime is 212237107. The reversal of 212237071 is 170732212.

Together with next prime (212237107) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212237071 - 2³ = 212237063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212237171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106118535 + 106118536.

It is an arithmetic number, because the mean of its divisors is an integer number (106118536).

Almost surely, 2^212237071 is an apocalyptic number.

212237071 is a deficient number, since it is larger than the sum of its proper divisors (1).

212237071 is an equidigital number, since it uses as much as digits as its factorization.

212237071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 212237071 is about 14568.3585554447. The cubic root of 212237071 is about 596.4953756855.

Adding to 212237071 its reverse (170732212), we get a palindrome (382969283).

It can be divided in two parts, 2122 and 37071, that added together give a palindrome (39193).

The spelling of 212237071 in words is "two hundred twelve million, two hundred thirty-seven thousand, seventy-one".