211222102022221 has 8 divisors (see below), whose sum is σ = 211340735897600. Its totient is φ = 211103498380320.

The previous prime is 211222102022147. The next prime is 211222102022249. The reversal of 211222102022221 is 122220201222112.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211222102022221 is a prime.

It is a super-2 number, since 2×211222102022221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211222102022192 and 211222102022201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211222102022521) 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, 6425545 + ... + 21534433.

It is an arithmetic number, because the mean of its divisors is an integer number (26417591987200).

Almost surely, 2^{211222102022221} is an apocalyptic number.

It is an amenable number.

211222102022221 is a deficient number, since it is larger than the sum of its proper divisors (118633875379).

211222102022221 is a wasteful number, since it uses less digits than its factorization.

211222102022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15116739.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 211222102022221 its reverse (122220201222112), we get a palindrome (333442303244333).

The spelling of 211222102022221 in words is "two hundred eleven trillion, two hundred twenty-two billion, one hundred two million, twenty-two thousand, two hundred twenty-one".