211222102201028 has 6 divisors (see below), whose sum is σ = 369638678851806. Its totient is φ = 105611051100512.

The previous prime is 211222102201027. The next prime is 211222102201049. The reversal of 211222102201028 is 820102201222112.

It can be written as a sum of positive squares in only one way, i.e., 175302313471684 + 35919788729344 = 13240178^2 + 5993312^2 .

It is a super-2 number, since 2×211222102201028² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211222102200988 and 211222102201006.

It is not an unprimeable number, because it can be changed into a prime (211222102201027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26402762775125 + ... + 26402762775132.

It is an arithmetic number, because the mean of its divisors is an integer number (61606446475301).

Almost surely, 2^{211222102201028} is an apocalyptic number.

It is an amenable number.

211222102201028 is a deficient number, since it is larger than the sum of its proper divisors (158416576650778).

211222102201028 is a wasteful number, since it uses less digits than its factorization.

211222102201028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52805525550261 (or 52805525550259 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 26.

The spelling of 211222102201028 in words is "two hundred eleven trillion, two hundred twenty-two billion, one hundred two million, two hundred one thousand, twenty-eight".