102221212102 has 4 divisors (see below), whose sum is σ = 153331818156. Its totient is φ = 51110606050.

The previous prime is 102221212097. The next prime is 102221212123. The reversal of 102221212102 is 201212122201.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

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, 25555303024 + ... + 25555303027.

It is an arithmetic number, because the mean of its divisors is an integer number (38332954539).

Almost surely, 2^102221212102 is an apocalyptic number.

102221212102 is a deficient number, since it is larger than the sum of its proper divisors (51110606054).

102221212102 is an equidigital number, since it uses as much as digits as its factorization.

102221212102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51110606053.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 102221212102 its reverse (201212122201), we get a palindrome (303433334303).

The spelling of 102221212102 in words is "one hundred two billion, two hundred twenty-one million, two hundred twelve thousand, one hundred two".