212101200101 has 4 divisors (see below), whose sum is σ = 242401371552. Its totient is φ = 181801028652.

The previous prime is 212101200097. The next prime is 212101200127. The reversal of 212101200101 is 101002101212.

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 212101200101 - 2² = 212101200097 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 (212101200001) 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, 15150085715 + ... + 15150085728.

It is an arithmetic number, because the mean of its divisors is an integer number (60600342888).

Almost surely, 2^212101200101 is an apocalyptic number.

It is an amenable number.

212101200101 is a deficient number, since it is larger than the sum of its proper divisors (30300171451).

212101200101 is an equidigital number, since it uses as much as digits as its factorization.

212101200101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30300171450.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 212101200101 its reverse (101002101212), we get a palindrome (313103301313).

The spelling of 212101200101 in words is "two hundred twelve billion, one hundred one million, two hundred thousand, one hundred one".