102204121066 has 4 divisors (see below), whose sum is σ = 153306181602. Its totient is φ = 51102060532.

The previous prime is 102204121043. The next prime is 102204121087. The reversal of 102204121066 is 660121402201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 74073787225 + 28130333841 = 272165^2 + 167721^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 102204121066.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25551030265 + ... + 25551030268.

Almost surely, 2^102204121066 is an apocalyptic number.

102204121066 is a deficient number, since it is larger than the sum of its proper divisors (51102060536).

102204121066 is an equidigital number, since it uses as much as digits as its factorization.

102204121066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51102060535.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 102204121066 its reverse (660121402201), we get a palindrome (762325523267).

The spelling of 102204121066 in words is "one hundred two billion, two hundred four million, one hundred twenty-one thousand, sixty-six".