10221221220102 has 12 divisors (see below), whose sum is σ = 22145979310260. Its totient is φ = 3407073740028.

The previous prime is 10221221220079. The next prime is 10221221220121. The reversal of 10221221220102 is 20102212212201.

It is a happy number.

10221221220102 is a `hidden beast` number, since 1 + 0 + 221 + 221 + 220 + 1 + 0 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 567845623339 = 10221221220102 / (1 + 0 + 2 + 2 + 1 + 2 + 2 + 1 + 2 + 2 + 0 + 1 + 0 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 283922811652 + ... + 283922811687.

It is an arithmetic number, because the mean of its divisors is an integer number (1845498275855).

Almost surely, 2^{10221221220102} is an apocalyptic number.

10221221220102 is an abundant number, since it is smaller than the sum of its proper divisors (11924758090158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10221221220102 is a wasteful number, since it uses less digits than its factorization.

10221221220102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567845623347 (or 567845623344 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 10221221220102 its reverse (20102212212201), we get a palindrome (30323433432303).

The spelling of 10221221220102 in words is "ten trillion, two hundred twenty-one billion, two hundred twenty-one million, two hundred twenty thousand, one hundred two".