102221000212 has 6 divisors (see below), whose sum is σ = 178886750378. Its totient is φ = 51110500104.

The previous prime is 102221000183. The next prime is 102221000213. The reversal of 102221000212 is 212000122201.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 80636689156 + 21584311056 = 283966^2 + 146916^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102221000192 and 102221000201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102221000213) 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 as a sum of consecutive naturals, namely, 12777625023 + ... + 12777625030.

Almost surely, 2^102221000212 is an apocalyptic number.

It is an amenable number.

102221000212 is a deficient number, since it is larger than the sum of its proper divisors (76665750166).

102221000212 is a wasteful number, since it uses less digits than its factorization.

102221000212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25555250057 (or 25555250055 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 102221000212 its reverse (212000122201), we get a palindrome (314221122413).

The spelling of 102221000212 in words is "one hundred two billion, two hundred twenty-one million, two hundred twelve", and thus it is an aban number.