1221022102073 has 2 divisors, whose sum is σ = 1221022102074. Its totient is φ = 1221022102072.

The previous prime is 1221022102051. The next prime is 1221022102099. The reversal of 1221022102073 is 3702012201221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 799357588624 + 421664513449 = 894068^2 + 649357^2 .

It is a cyclic number.

It is not a de Polignac number, because 1221022102073 - 2⁶ = 1221022102009 is a prime.

It is not a weakly prime, because it can be changed into another prime (1221022102273) 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, 610511051036 + 610511051037.

It is an arithmetic number, because the mean of its divisors is an integer number (610511051037).

Almost surely, 2^{1221022102073} is an apocalyptic number.

It is an amenable number.

1221022102073 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221022102073 is an equidigital number, since it uses as much as digits as its factorization.

1221022102073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 23.

Adding to 1221022102073 its reverse (3702012201221), we get a palindrome (4923034303294).

The spelling of 1221022102073 in words is "one trillion, two hundred twenty-one billion, twenty-two million, one hundred two thousand, seventy-three".