211101021102221 has 8 divisors (see below), whose sum is σ = 219091703365920. Its totient is φ = 203157761285808.

The previous prime is 211101021102089. The next prime is 211101021102233. The reversal of 211101021102221 is 122201120101112.

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 211101021102221 - 2⁴⁶ = 140732276924557 is a prime.

It is a super-2 number, since 2×211101021102221² (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 211101021102221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211101021602221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11855602751 + ... + 11855620556.

It is an arithmetic number, because the mean of its divisors is an integer number (27386462920740).

Almost surely, 2^{211101021102221} is an apocalyptic number.

It is an amenable number.

211101021102221 is a deficient number, since it is larger than the sum of its proper divisors (7990682263699).

211101021102221 is a wasteful number, since it uses less digits than its factorization.

211101021102221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23711223643.

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

Adding to 211101021102221 its reverse (122201120101112), we get a palindrome (333302141203333).

The spelling of 211101021102221 in words is "two hundred eleven trillion, one hundred one billion, twenty-one million, one hundred two thousand, two hundred twenty-one".