211222100201121 has 6 divisors (see below), whose sum is σ = 305098589179410. Its totient is φ = 140814733467408.

The previous prime is 211222100201053. The next prime is 211222100201141. The reversal of 211222100201121 is 121102001222112.

211222100201121 is a `hidden beast` number, since 21 + 1 + 222 + 100 + 201 + 121 = 666.

It can be written as a sum of positive squares in only one way, i.e., 211042764890721 + 179335310400 = 14527311^2 + 423480^2 .

It is not a de Polignac number, because 211222100201121 - 2²⁷ = 211221965983393 is a prime.

It is a super-2 number, since 2×211222100201121² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 211222100201094 and 211222100201103.

It is not an unprimeable number, because it can be changed into a prime (211222100201141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11734561122276 + ... + 11734561122293.

It is an arithmetic number, because the mean of its divisors is an integer number (50849764863235).

Almost surely, 2^{211222100201121} is an apocalyptic number.

It is an amenable number.

211222100201121 is a deficient number, since it is larger than the sum of its proper divisors (93876488978289).

211222100201121 is a wasteful number, since it uses less digits than its factorization.

211222100201121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23469122244575 (or 23469122244572 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 211222100201121 its reverse (121102001222112), we get a palindrome (332324101423233).

The spelling of 211222100201121 in words is "two hundred eleven trillion, two hundred twenty-two billion, one hundred million, two hundred one thousand, one hundred twenty-one".