1220211022087 has 2 divisors, whose sum is σ = 1220211022088. Its totient is φ = 1220211022086.

The previous prime is 1220211022057. The next prime is 1220211022169. The reversal of 1220211022087 is 7802201120221.

It is a weak prime.

It is an emirp because it is prime and its reverse (7802201120221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220211022087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220211022057) 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, 610105511043 + 610105511044.

It is an arithmetic number, because the mean of its divisors is an integer number (610105511044).

Almost surely, 2^{1220211022087} is an apocalyptic number.

1220211022087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220211022087 is an equidigital number, since it uses as much as digits as its factorization.

1220211022087 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 28.

The spelling of 1220211022087 in words is "one trillion, two hundred twenty billion, two hundred eleven million, twenty-two thousand, eighty-seven".