212102120202211 has 4 divisors (see below), whose sum is σ = 212349613925592. Its totient is φ = 211854626478832.

The previous prime is 212102120202127. The next prime is 212102120202281. The reversal of 212102120202211 is 112202021201212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212102120202211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212102120202281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123746860405 + ... + 123746862118.

It is an arithmetic number, because the mean of its divisors is an integer number (53087403481398).

Almost surely, 2^{212102120202211} is an apocalyptic number.

212102120202211 is a deficient number, since it is larger than the sum of its proper divisors (247493723381).

212102120202211 is an equidigital number, since it uses as much as digits as its factorization.

212102120202211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247493723380.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 212102120202211 its reverse (112202021201212), we get a palindrome (324304141403423).

Subtracting from 212102120202211 its reverse (112202021201212), we obtain a palindrome (99900099000999).

The spelling of 212102120202211 in words is "two hundred twelve trillion, one hundred two billion, one hundred twenty million, two hundred two thousand, two hundred eleven".