102333222221 has 4 divisors (see below), whose sum is σ = 102372090492. Its totient is φ = 102294353952.

The previous prime is 102333222217. The next prime is 102333222239. The reversal of 102333222221 is 122222333201.

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

It can be written as a sum of positive squares in 2 ways, for example, as 42389044996 + 59944177225 = 205886^2 + 244835^2 .

It is a cyclic number.

It is not a de Polignac number, because 102333222221 - 2² = 102333222217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102333222821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19430186 + ... + 19435451.

It is an arithmetic number, because the mean of its divisors is an integer number (25593022623).

Almost surely, 2^102333222221 is an apocalyptic number.

It is an amenable number.

102333222221 is a deficient number, since it is larger than the sum of its proper divisors (38868271).

102333222221 is an equidigital number, since it uses as much as digits as its factorization.

102333222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38868270.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 102333222221 its reverse (122222333201), we get a palindrome (224555555422).

The spelling of 102333222221 in words is "one hundred two billion, three hundred thirty-three million, two hundred twenty-two thousand, two hundred twenty-one".