102112201221 has 8 divisors (see below), whose sum is σ = 138014664960. Its totient is φ = 67142269152.

The previous prime is 102112201187. The next prime is 102112201319. The reversal of 102112201221 is 122102211201.

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

It is not a de Polignac number, because 102112201221 - 2⁹ = 102112200709 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102112201221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102112202221) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 233132661 + ... + 233133098.

It is an arithmetic number, because the mean of its divisors is an integer number (17251833120).

Almost surely, 2^102112201221 is an apocalyptic number.

It is an amenable number.

102112201221 is a deficient number, since it is larger than the sum of its proper divisors (35902463739).

102112201221 is an equidigital number, since it uses as much as digits as its factorization.

102112201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466265835.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 102112201221 its reverse (122102211201), we get a palindrome (224214412422).

The spelling of 102112201221 in words is "one hundred two billion, one hundred twelve million, two hundred one thousand, two hundred twenty-one".