212112222020101 has 4 divisors (see below), whose sum is σ = 228428546790892. Its totient is φ = 195795897249312.

The previous prime is 212112222020033. The next prime is 212112222020143. The reversal of 212112222020101 is 101020222211212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 103558119675201 + 108554102344900 = 10176351^2 + 10418930^2 .

It is a cyclic number.

It is not a de Polignac number, because 212112222020101 - 2¹⁵ = 212112221987333 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 (212112222020401) 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, 8158162385376 + ... + 8158162385401.

It is an arithmetic number, because the mean of its divisors is an integer number (57107136697723).

Almost surely, 2^{212112222020101} is an apocalyptic number.

It is an amenable number.

212112222020101 is a deficient number, since it is larger than the sum of its proper divisors (16316324770791).

212112222020101 is a wasteful number, since it uses less digits than its factorization.

212112222020101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16316324770790.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 212112222020101 its reverse (101020222211212), we get a palindrome (313132444231313).

The spelling of 212112222020101 in words is "two hundred twelve trillion, one hundred twelve billion, two hundred twenty-two million, twenty thousand, one hundred one".