211222310232221 has 8 divisors (see below), whose sum is σ = 212854526738688. Its totient is φ = 209593164690000.

The previous prime is 211222310232191. The next prime is 211222310232229. The reversal of 211222310232221 is 122232013222112.

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 211222310232221 - 2³⁴ = 211205130363037 is a prime.

It is a super-2 number, since 2×211222310232221² (a number of 29 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 (211222310232229) 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, 767602970 + ... + 767878091.

It is an arithmetic number, because the mean of its divisors is an integer number (26606815842336).

Almost surely, 2^{211222310232221} is an apocalyptic number.

It is an amenable number.

211222310232221 is a deficient number, since it is larger than the sum of its proper divisors (1632216506467).

211222310232221 is a wasteful number, since it uses less digits than its factorization.

211222310232221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1535482123.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 211222310232221 its reverse (122232013222112), we get a palindrome (333454323454333).

The spelling of 211222310232221 in words is "two hundred eleven trillion, two hundred twenty-two billion, three hundred ten million, two hundred thirty-two thousand, two hundred twenty-one".