1220055034591 has 2 divisors, whose sum is σ = 1220055034592. Its totient is φ = 1220055034590.

The previous prime is 1220055034577. The next prime is 1220055034609. The reversal of 1220055034591 is 1954305500221.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220055034591 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1220055034591.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220055074591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610027517295 + 610027517296.

It is an arithmetic number, because the mean of its divisors is an integer number (610027517296).

Almost surely, 2^{1220055034591} is an apocalyptic number.

1220055034591 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220055034591 is an equidigital number, since it uses as much as digits as its factorization.

1220055034591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54000, while the sum is 37.

The spelling of 1220055034591 in words is "one trillion, two hundred twenty billion, fifty-five million, thirty-four thousand, five hundred ninety-one".