102002222221 has 4 divisors (see below), whose sum is σ = 106437101472. Its totient is φ = 97567342972.

The previous prime is 102002222213. The next prime is 102002222237. The reversal of 102002222221 is 122222200201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 102002222221 - 2³ = 102002222213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102002222195 and 102002222204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102002222251) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 2217439591 + ... + 2217439636.

It is an arithmetic number, because the mean of its divisors is an integer number (26609275368).

Almost surely, 2^102002222221 is an apocalyptic number.

It is an amenable number.

102002222221 is a deficient number, since it is larger than the sum of its proper divisors (4434879251).

102002222221 is an equidigital number, since it uses as much as digits as its factorization.

102002222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4434879250.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 102002222221 its reverse (122222200201), we get a palindrome (224224422422).

The spelling of 102002222221 in words is "one hundred two billion, two million, two hundred twenty-two thousand, two hundred twenty-one".