1220550791107 has 2 divisors, whose sum is σ = 1220550791108. Its totient is φ = 1220550791106.

The previous prime is 1220550791081. The next prime is 1220550791167. The reversal of 1220550791107 is 7011970550221.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220550791107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1220550791107.

It is not a weakly prime, because it can be changed into another prime (1220550791167) 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, 610275395553 + 610275395554.

It is an arithmetic number, because the mean of its divisors is an integer number (610275395554).

Almost surely, 2^{1220550791107} is an apocalyptic number.

1220550791107 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220550791107 is an equidigital number, since it uses as much as digits as its factorization.

1220550791107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 44100, while the sum is 40.

The spelling of 1220550791107 in words is "one trillion, two hundred twenty billion, five hundred fifty million, seven hundred ninety-one thousand, one hundred seven".