212111210122102 has 16 divisors (see below), whose sum is σ = 320031900840960. Its totient is φ = 105434751679488.

The previous prime is 212111210122067. The next prime is 212111210122109. The reversal of 212111210122102 is 201221012111212.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 212111210122102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212111210122109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209954763 + ... + 210962614.

It is an arithmetic number, because the mean of its divisors is an integer number (20001993802560).

Almost surely, 2^{212111210122102} is an apocalyptic number.

212111210122102 is a deficient number, since it is larger than the sum of its proper divisors (107920690718858).

212111210122102 is a wasteful number, since it uses less digits than its factorization.

212111210122102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420918855.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 212111210122102 its reverse (201221012111212), we get a palindrome (413332222233314).

The spelling of 212111210122102 in words is "two hundred twelve trillion, one hundred eleven billion, two hundred ten million, one hundred twenty-two thousand, one hundred two".