212221221000101 has 4 divisors (see below), whose sum is σ = 212221250140032. Its totient is φ = 212221191860172.

The previous prime is 212221221000097. The next prime is 212221221000137. The reversal of 212221221000101 is 101000122122212.

212221221000101 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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 212221221000101 - 2² = 212221221000097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212221221000101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212221221000401) 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, 6909506 + ... + 21729788.

It is an arithmetic number, because the mean of its divisors is an integer number (53055312535008).

Almost surely, 2^{212221221000101} is an apocalyptic number.

It is an amenable number.

212221221000101 is a deficient number, since it is larger than the sum of its proper divisors (29139931).

212221221000101 is a wasteful number, since it uses less digits than its factorization.

212221221000101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29139930.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 212221221000101 its reverse (101000122122212), we get a palindrome (313221343122313).

The spelling of 212221221000101 in words is "two hundred twelve trillion, two hundred twenty-one billion, two hundred twenty-one million, one hundred one", and thus it is an aban number.