1220220019 has 2 divisors, whose sum is σ = 1220220020. Its totient is φ = 1220220018.

The previous prime is 1220219971. The next prime is 1220220031. The reversal of 1220220019 is 9100220221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1220220019 - 2¹⁵ = 1220187251 is a prime.

It is a super-2 number, since 2×1220220019² = 2977873789536720722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1220219978 and 1220220005.

It is not a weakly prime, because it can be changed into another prime (1220220049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610110009 + 610110010.

It is an arithmetic number, because the mean of its divisors is an integer number (610110010).

Almost surely, 2^1220220019 is an apocalyptic number.

1220220019 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220220019 is an equidigital number, since it uses as much as digits as its factorization.

1220220019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1220220019 is about 34931.6478139809. The cubic root of 1220220019 is about 1068.5939603979.

The spelling of 1220220019 in words is "one billion, two hundred twenty million, two hundred twenty thousand, nineteen".