212010211102221 has 16 divisors (see below), whose sum is σ = 358959087580800. Its totient is φ = 121148692058304.

The previous prime is 212010211102213. The next prime is 212010211102253. The reversal of 212010211102221 is 122201112010212.

212010211102221 is a `hidden beast` number, since 2 + 120 + 10 + 211 + 102 + 221 = 666.

It is not a de Polignac number, because 212010211102221 - 2³ = 212010211102213 is a prime.

It is a super-2 number, since 2×212010211102221² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212010211102194 and 212010211102203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212010211102421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 560873574156 + ... + 560873574533.

It is an arithmetic number, because the mean of its divisors is an integer number (22434942973800).

Almost surely, 2^{212010211102221} is an apocalyptic number.

212010211102221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

212010211102221 is a deficient number, since it is larger than the sum of its proper divisors (146948876478579).

212010211102221 is a wasteful number, since it uses less digits than its factorization.

212010211102221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121747148705 (or 1121747148699 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 212010211102221 its reverse (122201112010212), we get a palindrome (334211323112433).

The spelling of 212010211102221 in words is "two hundred twelve trillion, ten billion, two hundred eleven million, one hundred two thousand, two hundred twenty-one".