211012212102221 has 8 divisors (see below), whose sum is σ = 212326219664544. Its totient is φ = 209699288262000.

The previous prime is 211012212102217. The next prime is 211012212102253. The reversal of 211012212102221 is 122201212210112.

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 211012212102221 - 2² = 211012212102217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211012212102193 and 211012212102202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211012212102271) 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, 270539891 + ... + 271318736.

It is an arithmetic number, because the mean of its divisors is an integer number (26540777458068).

Almost surely, 2^{211012212102221} is an apocalyptic number.

It is an amenable number.

211012212102221 is a deficient number, since it is larger than the sum of its proper divisors (1314007562323).

211012212102221 is a wasteful number, since it uses less digits than its factorization.

211012212102221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541861051.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 211012212102221 its reverse (122201212210112), we get a palindrome (333213424312333).

The spelling of 211012212102221 in words is "two hundred eleven trillion, twelve billion, two hundred twelve million, one hundred two thousand, two hundred twenty-one".