212102101112101 has 4 divisors (see below), whose sum is σ = 217034708114752. Its totient is φ = 207169494109452.

The previous prime is 212102101112093. The next prime is 212102101112123. The reversal of 212102101112101 is 101211101201212.

212102101112101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212102101112101 - 2³ = 212102101112093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212102101112131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2466303501261 + ... + 2466303501346.

It is an arithmetic number, because the mean of its divisors is an integer number (54258677028688).

Almost surely, 2^{212102101112101} is an apocalyptic number.

It is an amenable number.

212102101112101 is a deficient number, since it is larger than the sum of its proper divisors (4932607002651).

212102101112101 is an equidigital number, since it uses as much as digits as its factorization.

212102101112101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4932607002650.

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

Adding to 212102101112101 its reverse (101211101201212), we get a palindrome (313313202313313).

The spelling of 212102101112101 in words is "two hundred twelve trillion, one hundred two billion, one hundred one million, one hundred twelve thousand, one hundred one".