212112001221102 has 56 divisors (see below), whose sum is σ = 477044455718376. Its totient is φ = 70702418174256.

The previous prime is 212112001221049. The next prime is 212112001221139. The reversal of 212112001221102 is 201122100211212.

212112001221102 is a `hidden beast` number, since 21 + 211 + 200 + 1 + 221 + 10 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 64467033 + ... + 67677339.

It is an arithmetic number, because the mean of its divisors is an integer number (8518650994971).

Almost surely, 2^{212112001221102} is an apocalyptic number.

212112001221102 is an abundant number, since it is smaller than the sum of its proper divisors (264932454497274).

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

212112001221102 is an equidigital number, since it uses as much as digits as its factorization.

212112001221102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3255644 (or 3255629 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 212112001221102 its reverse (201122100211212), we get a palindrome (413234101432314).

The spelling of 212112001221102 in words is "two hundred twelve trillion, one hundred twelve billion, one million, two hundred twenty-one thousand, one hundred two".