212211707 has 2 divisors, whose sum is σ = 212211708. Its totient is φ = 212211706.

The previous prime is 212211683. The next prime is 212211733. The reversal of 212211707 is 707112212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212211707 - 2¹⁶ = 212146171 is a prime.

It is not a weakly prime, because it can be changed into another prime (212211737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106105853 + 106105854.

It is an arithmetic number, because the mean of its divisors is an integer number (106105854).

Almost surely, 2^212211707 is an apocalyptic number.

212211707 is a deficient number, since it is larger than the sum of its proper divisors (1).

212211707 is an equidigital number, since it uses as much as digits as its factorization.

212211707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 392, while the sum is 23.

The square root of 212211707 is about 14567.4880126946. The cubic root of 212211707 is about 596.4716127752.

Adding to 212211707 its reverse (707112212), we get a palindrome (919323919).

The spelling of 212211707 in words is "two hundred twelve million, two hundred eleven thousand, seven hundred seven".