211222022021 has 8 divisors (see below), whose sum is σ = 216142048320. Its totient is φ = 206302354272.

The previous prime is 211222021993. The next prime is 211222022041. The reversal of 211222022021 is 120220222112.

It is a happy number.

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 211222022021 - 2²⁶ = 211154913157 is a prime.

It is a super-2 number, since 2×211222022021² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211222022041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1379336 + ... + 1524798.

It is an arithmetic number, because the mean of its divisors is an integer number (27017756040).

Almost surely, 2^211222022021 is an apocalyptic number.

It is an amenable number.

211222022021 is a deficient number, since it is larger than the sum of its proper divisors (4920026299).

211222022021 is a wasteful number, since it uses less digits than its factorization.

211222022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179275.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 211222022021 its reverse (120220222112), we get a palindrome (331442244133).

The spelling of 211222022021 in words is "two hundred eleven billion, two hundred twenty-two million, twenty-two thousand, twenty-one".