1220112221087 has 2 divisors, whose sum is σ = 1220112221088. Its totient is φ = 1220112221086.

The previous prime is 1220112221071. The next prime is 1220112221113. The reversal of 1220112221087 is 7801222110221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1220112221087 - 2⁴ = 1220112221071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220112220087) 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, 610056110543 + 610056110544.

It is an arithmetic number, because the mean of its divisors is an integer number (610056110544).

Almost surely, 2^{1220112221087} is an apocalyptic number.

1220112221087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220112221087 is an equidigital number, since it uses as much as digits as its factorization.

1220112221087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1792, while the sum is 29.

The spelling of 1220112221087 in words is "one trillion, two hundred twenty billion, one hundred twelve million, two hundred twenty-one thousand, eighty-seven".