211201212107 has 2 divisors, whose sum is σ = 211201212108. Its totient is φ = 211201212106.

The previous prime is 211201212049. The next prime is 211201212113. The reversal of 211201212107 is 701212102112.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211201212107 - 2⁶ = 211201212043 is a prime.

It is not a weakly prime, because it can be changed into another prime (211201212007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105600606053 + 105600606054.

It is an arithmetic number, because the mean of its divisors is an integer number (105600606054).

Almost surely, 2^211201212107 is an apocalyptic number.

211201212107 is a deficient number, since it is larger than the sum of its proper divisors (1).

211201212107 is an equidigital number, since it uses as much as digits as its factorization.

211201212107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 20.

Adding to 211201212107 its reverse (701212102112), we get a palindrome (912413314219).

The spelling of 211201212107 in words is "two hundred eleven billion, two hundred one million, two hundred twelve thousand, one hundred seven".