1123721890607 has 2 divisors, whose sum is σ = 1123721890608. Its totient is φ = 1123721890606.

The previous prime is 1123721890531. The next prime is 1123721890609. The reversal of 1123721890607 is 7060981273211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1123721890607 - 2⁴⁰ = 24210262831 is a prime.

Together with 1123721890609, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1123721890609) 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, 561860945303 + 561860945304.

It is an arithmetic number, because the mean of its divisors is an integer number (561860945304).

Almost surely, 2^{1123721890607} is an apocalyptic number.

1123721890607 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123721890607 is an equidigital number, since it uses as much as digits as its factorization.

1123721890607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 254016, while the sum is 47.

The spelling of 1123721890607 in words is "one trillion, one hundred twenty-three billion, seven hundred twenty-one million, eight hundred ninety thousand, six hundred seven".