212102212101 has 16 divisors (see below), whose sum is σ = 304672228224. Its totient is φ = 130475064384.

The previous prime is 212102212067. The next prime is 212102212109. The reversal of 212102212101 is 101212201212.

It is not a de Polignac number, because 212102212101 - 2¹³ = 212102203909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212102212109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 924066 + ... + 1130531.

It is an arithmetic number, because the mean of its divisors is an integer number (19042014264).

Almost surely, 2^212102212101 is an apocalyptic number.

It is an amenable number.

212102212101 is a deficient number, since it is larger than the sum of its proper divisors (92570016123).

212102212101 is a wasteful number, since it uses less digits than its factorization.

212102212101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2057260.

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

Adding to 212102212101 its reverse (101212201212), we get a palindrome (313314413313).

The spelling of 212102212101 in words is "two hundred twelve billion, one hundred two million, two hundred twelve thousand, one hundred one".