212101132220101 has 4 divisors (see below), whose sum is σ = 212101759759104. Its totient is φ = 212100504681100.

The previous prime is 212101132220059. The next prime is 212101132220113. The reversal of 212101132220101 is 101022231101212.

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 212101132220101 - 2¹⁹ = 212101131695813 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 (212101132221101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 313262245 + ... + 313938586.

It is an arithmetic number, because the mean of its divisors is an integer number (53025439939776).

Almost surely, 2^{212101132220101} is an apocalyptic number.

It is an amenable number.

212101132220101 is a deficient number, since it is larger than the sum of its proper divisors (627539003).

212101132220101 is an equidigital number, since it uses as much as digits as its factorization.

212101132220101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627539002.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 212101132220101 its reverse (101022231101212), we get a palindrome (313123363321313).

The spelling of 212101132220101 in words is "two hundred twelve trillion, one hundred one billion, one hundred thirty-two million, two hundred twenty thousand, one hundred one".