1320012019 has 2 divisors, whose sum is σ = 1320012020. Its totient is φ = 1320012018.

The previous prime is 1320012017. The next prime is 1320012041. The reversal of 1320012019 is 9102100231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1320012019 - 2¹ = 1320012017 is a prime.

It is a super-2 number, since 2×1320012019² = 3484863460608912722, which contains 22 as substring.

Together with 1320012017, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1320011987 and 1320012005.

It is not a weakly prime, because it can be changed into another prime (1320012017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660006009 + 660006010.

It is an arithmetic number, because the mean of its divisors is an integer number (660006010).

Almost surely, 2^1320012019 is an apocalyptic number.

1320012019 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320012019 is an equidigital number, since it uses as much as digits as its factorization.

1320012019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 1320012019 is about 36331.9696548370. The cubic root of 1320012019 is about 1096.9646398648.

The spelling of 1320012019 in words is "one billion, three hundred twenty million, twelve thousand, nineteen".