102312221221 has 8 divisors (see below), whose sum is σ = 118530010304. Its totient is φ = 86494871520.

The previous prime is 102312221197. The next prime is 102312221251. The reversal of 102312221221 is 122122213201.

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

It is a cyclic number.

It is not a de Polignac number, because 102312221221 - 2⁷ = 102312221093 is a prime.

It is a super-2 number, since 2×102312221221² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102312221251) 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, 100109295 + ... + 100110316.

It is an arithmetic number, because the mean of its divisors is an integer number (14816251288).

Almost surely, 2^102312221221 is an apocalyptic number.

It is an amenable number.

102312221221 is a deficient number, since it is larger than the sum of its proper divisors (16217789083).

102312221221 is an equidigital number, since it uses as much as digits as its factorization.

102312221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200219691.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 102312221221 its reverse (122122213201), we get a palindrome (224434434422).

The spelling of 102312221221 in words is "one hundred two billion, three hundred twelve million, two hundred twenty-one thousand, two hundred twenty-one".