1221102102107 has 2 divisors, whose sum is σ = 1221102102108. Its totient is φ = 1221102102106.

The previous prime is 1221102102097. The next prime is 1221102102127. The reversal of 1221102102107 is 7012012011221.

It is a happy number.

It is an a-pointer prime, because the next prime (1221102102127) can be obtained adding 1221102102107 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1221102102107 - 2³⁰ = 1220028360283 is a prime.

It is not a weakly prime, because it can be changed into another prime (1221102102127) 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 as a sum of consecutive naturals, namely, 610551051053 + 610551051054.

It is an arithmetic number, because the mean of its divisors is an integer number (610551051054).

Almost surely, 2^{1221102102107} is an apocalyptic number.

1221102102107 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221102102107 is an equidigital number, since it uses as much as digits as its factorization.

1221102102107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 20.

Adding to 1221102102107 its reverse (7012012011221), we get a palindrome (8233114113328).

The spelling of 1221102102107 in words is "one trillion, two hundred twenty-one billion, one hundred two million, one hundred two thousand, one hundred seven".