212221102102 has 16 divisors (see below), whose sum is σ = 332386266960. Its totient is φ = 101494072288.

The previous prime is 212221102099. The next prime is 212221102123. The reversal of 212221102102 is 201201122212.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17091853 + ... + 17104264.

It is an arithmetic number, because the mean of its divisors is an integer number (20774141685).

Almost surely, 2^212221102102 is an apocalyptic number.

212221102102 is a deficient number, since it is larger than the sum of its proper divisors (120165164858).

212221102102 is a wasteful number, since it uses less digits than its factorization.

212221102102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34196255.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 212221102102 its reverse (201201122212), we get a palindrome (413422224314).

The spelling of 212221102102 in words is "two hundred twelve billion, two hundred twenty-one million, one hundred two thousand, one hundred two".