212101011102221 has 8 divisors (see below), whose sum is σ = 212265427915584. Its totient is φ = 211936607827840.

The previous prime is 212101011102121. The next prime is 212101011102251. The reversal of 212101011102221 is 122201110101212.

212101011102221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212101011102221 - 2³⁰ = 212099937360397 is a prime.

It is a super-2 number, since 2×212101011102221² (a number of 29 digits) contains 22 as substring.

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 212101011102221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212101011102251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28072541 + ... + 34817661.

It is an arithmetic number, because the mean of its divisors is an integer number (26533178489448).

Almost surely, 2^{212101011102221} is an apocalyptic number.

It is an amenable number.

212101011102221 is a deficient number, since it is larger than the sum of its proper divisors (164416813363).

212101011102221 is a wasteful number, since it uses less digits than its factorization.

212101011102221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6769491.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 212101011102221 its reverse (122201110101212), we get a palindrome (334302121203433).

The spelling of 212101011102221 in words is "two hundred twelve trillion, one hundred one billion, eleven million, one hundred two thousand, two hundred twenty-one".