1123203220019 has 2 divisors, whose sum is σ = 1123203220020. Its totient is φ = 1123203220018.

The previous prime is 1123203219893. The next prime is 1123203220121. The reversal of 1123203220019 is 9100223023211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1123203220019 - 2⁸ = 1123203219763 is a prime.

It is a super-2 number, since 2×1123203220019² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1123203220019.

It is not a weakly prime, because it can be changed into another prime (1123203220519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561601610009 + 561601610010.

It is an arithmetic number, because the mean of its divisors is an integer number (561601610010).

Almost surely, 2^{1123203220019} is an apocalyptic number.

1123203220019 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123203220019 is an equidigital number, since it uses as much as digits as its factorization.

1123203220019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 26.

The spelling of 1123203220019 in words is "one trillion, one hundred twenty-three billion, two hundred three million, two hundred twenty thousand, nineteen".