212101100012102 has 24 divisors (see below), whose sum is σ = 370465985124144. Its totient is φ = 90809297398512.

The previous prime is 212101100012069. The next prime is 212101100012143. The reversal of 212101100012102 is 201210001101212.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1085306978 + ... + 1085502389.

It is an arithmetic number, because the mean of its divisors is an integer number (15436082713506).

Almost surely, 2^{212101100012102} is an apocalyptic number.

212101100012102 is a deficient number, since it is larger than the sum of its proper divisors (158364885112042).

212101100012102 is a wasteful number, since it uses less digits than its factorization.

212101100012102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2170810380 (or 2170810373 counting only the distinct ones).

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

Adding to 212101100012102 its reverse (201210001101212), we get a palindrome (413311101113314).

The spelling of 212101100012102 in words is "two hundred twelve trillion, one hundred one billion, one hundred million, twelve thousand, one hundred two".