211121033322221 has 32 divisors (see below), whose sum is σ = 232330260704256. Its totient is φ = 190251249552000.

The previous prime is 211121033322217. The next prime is 211121033322223. The reversal of 211121033322221 is 122223330121112.

It is a cyclic number.

It is not a de Polignac number, because 211121033322221 - 2² = 211121033322217 is a prime.

It is a super-2 number, since 2×211121033322221² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211121033322223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5256585086 + ... + 5256625248.

It is an arithmetic number, because the mean of its divisors is an integer number (7260320647008).

Almost surely, 2^{211121033322221} is an apocalyptic number.

It is an amenable number.

211121033322221 is a deficient number, since it is larger than the sum of its proper divisors (21209227382035).

211121033322221 is a wasteful number, since it uses less digits than its factorization.

211121033322221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44273.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 211121033322221 its reverse (122223330121112), we get a palindrome (333344363443333).

The spelling of 211121033322221 in words is "two hundred eleven trillion, one hundred twenty-one billion, thirty-three million, three hundred twenty-two thousand, two hundred twenty-one".