212111112222102 has 16 divisors (see below), whose sum is σ = 424223410931712. Its totient is φ = 70703506326120.

The previous prime is 212111112222073. The next prime is 212111112222173. The reversal of 212111112222102 is 201222211111212.

It is a super-3 number, since 3×212111112222102³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47104474 + ... + 51410637.

It is an arithmetic number, because the mean of its divisors is an integer number (26513963183232).

Almost surely, 2^{212111112222102} is an apocalyptic number.

212111112222102 is an abundant number, since it is smaller than the sum of its proper divisors (212112298709610).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212111112222102 is a wasteful number, since it uses less digits than its factorization.

212111112222102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98873963.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 212111112222102 its reverse (201222211111212), we get a palindrome (413333323333314).

The spelling of 212111112222102 in words is "two hundred twelve trillion, one hundred eleven billion, one hundred twelve million, two hundred twenty-two thousand, one hundred two".