1220220221239 has 2 divisors, whose sum is σ = 1220220221240. Its totient is φ = 1220220221238.

The previous prime is 1220220221183. The next prime is 1220220221257. The reversal of 1220220221239 is 9321220220221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1220220221239 - 2⁷ = 1220220221111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220220221299) 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, 610110110619 + 610110110620.

It is an arithmetic number, because the mean of its divisors is an integer number (610110110620).

Almost surely, 2^{1220220221239} is an apocalyptic number.

1220220221239 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220220221239 is an equidigital number, since it uses as much as digits as its factorization.

1220220221239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The spelling of 1220220221239 in words is "one trillion, two hundred twenty billion, two hundred twenty million, two hundred twenty-one thousand, two hundred thirty-nine".