1123212124919 has 2 divisors, whose sum is σ = 1123212124920. Its totient is φ = 1123212124918.

The previous prime is 1123212124889. The next prime is 1123212124949. The reversal of 1123212124919 is 9194212123211.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (1123212124889) and next prime (1123212124949).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1123212124919 is a prime.

It is a super-2 number, since 2×1123212124919² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1123212124949) 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, 561606062459 + 561606062460.

It is an arithmetic number, because the mean of its divisors is an integer number (561606062460).

Almost surely, 2^{1123212124919} is an apocalyptic number.

1123212124919 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123212124919 is an equidigital number, since it uses as much as digits as its factorization.

1123212124919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 38.

The spelling of 1123212124919 in words is "one trillion, one hundred twenty-three billion, two hundred twelve million, one hundred twenty-four thousand, nine hundred nineteen".