1220000020097 has 2 divisors, whose sum is σ = 1220000020098. Its totient is φ = 1220000020096.

The previous prime is 1220000020081. The next prime is 1220000020121. The reversal of 1220000020097 is 7900200000221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 922068539536 + 297931480561 = 960244^2 + 545831^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220000020097 - 2⁴ = 1220000020081 is a prime.

It is not a weakly prime, because it can be changed into another prime (1220000028097) 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, 610000010048 + 610000010049.

It is an arithmetic number, because the mean of its divisors is an integer number (610000010049).

Almost surely, 2^{1220000020097} is an apocalyptic number.

It is an amenable number.

1220000020097 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220000020097 is an equidigital number, since it uses as much as digits as its factorization.

1220000020097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 23.

The spelling of 1220000020097 in words is "one trillion, two hundred twenty billion, twenty thousand, ninety-seven".