102222021211 has 4 divisors (see below), whose sum is σ = 103453611912.
Its totient is φ = 100990430512.
The previous prime is 102222021191. The next prime is 102222021221. The reversal of 102222021211 is 112120222201.
Adding to 102222021211 its reverse (112120222201), we get a palindrome (214342243412).
It is a happy number.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 102222021211 - 223 = 102213632603 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (102222021221) 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 3 ways as a sum of consecutive naturals, for example, 615795226 + ... + 615795391.
It is an arithmetic number, because the mean of its divisors is an integer number (25863402978).
Almost surely, 2102222021211 is an apocalyptic number.
102222021211 is a deficient number, since it is larger than the sum of its proper divisors (1231590701).
102222021211 is an equidigital number, since it uses as much as digits as its factorization.
102222021211 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1231590700.
The product of its (nonzero) digits is 64, while the sum is 16.
The spelling of 102222021211 in words is "one hundred two billion, two hundred twenty-two million, twenty-one thousand, two hundred eleven".