102222021218 has 8 divisors (see below), whose sum is σ = 153334724700. Its totient is φ = 51110446320.

The previous prime is 102222021191. The next prime is 102222021221. The reversal of 102222021218 is 812120222201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 94966899889 + 7255121329 = 308167^2 + 85177^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 102222021193 and 102222021202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1208 + ... + 452156.

Almost surely, 2^102222021218 is an apocalyptic number.

102222021218 is a deficient number, since it is larger than the sum of its proper divisors (51112703482).

102222021218 is a wasteful number, since it uses less digits than its factorization.

102222021218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564292.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 102222021218 its reverse (812120222201), we get a palindrome (914342243419).

The spelling of 102222021218 in words is "one hundred two billion, two hundred twenty-two million, twenty-one thousand, two hundred eighteen".