102002212221 has 64 divisors (see below), whose sum is σ = 169152012288. Its totient is φ = 53237657088.

The previous prime is 102002212211. The next prime is 102002212243. The reversal of 102002212221 is 122212200201.

It is not a de Polignac number, because 102002212221 - 2⁷ = 102002212093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102002212221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102002212211) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 34847260 + ... + 34850186.

It is an arithmetic number, because the mean of its divisors is an integer number (2643000192).

Almost surely, 2^102002212221 is an apocalyptic number.

It is an amenable number.

102002212221 is a deficient number, since it is larger than the sum of its proper divisors (67149800067).

102002212221 is a wasteful number, since it uses less digits than its factorization.

102002212221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4250.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 102002212221 its reverse (122212200201), we get a palindrome (224214412422).

The spelling of 102002212221 in words is "one hundred two billion, two million, two hundred twelve thousand, two hundred twenty-one".