212101112102 has 64 divisors (see below), whose sum is σ = 369148243968. Its totient is φ = 90330240000.

The previous prime is 212101112087. The next prime is 212101112123. The reversal of 212101112102 is 201211101212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 90216227 + ... + 90218577.

It is an arithmetic number, because the mean of its divisors is an integer number (5767941312).

Almost surely, 2^212101112102 is an apocalyptic number.

212101112102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212101112102 is a deficient number, since it is larger than the sum of its proper divisors (157047131866).

212101112102 is a wasteful number, since it uses less digits than its factorization.

212101112102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3365.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 212101112102 its reverse (201211101212), we get a palindrome (413312213314).

The spelling of 212101112102 in words is "two hundred twelve billion, one hundred one million, one hundred twelve thousand, one hundred two".