212012112102 has 128 divisors (see below), whose sum is σ = 498462720000. Its totient is φ = 60090151968.

The previous prime is 212012112089. The next prime is 212012112127. The reversal of 212012112102 is 201211210212.

212012112102 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 199446423 + ... + 199447485.

It is an arithmetic number, because the mean of its divisors is an integer number (3894240000).

Almost surely, 2^212012112102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212012112102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249231360000).

212012112102 is an abundant number, since it is smaller than the sum of its proper divisors (286450607898).

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

212012112102 is a wasteful number, since it uses less digits than its factorization.

212012112102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1775 (or 1761 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 212012112102 its reverse (201211210212), we get a palindrome (413223322314).

The spelling of 212012112102 in words is "two hundred twelve billion, twelve million, one hundred twelve thousand, one hundred two".