1121020121839 has 2 divisors, whose sum is σ = 1121020121840. Its totient is φ = 1121020121838.

The previous prime is 1121020121797. The next prime is 1121020121849. The reversal of 1121020121839 is 9381210201211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1121020121839 - 2⁹ = 1121020121327 is a prime.

It is a super-2 number, since 2×1121020121839² (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 1121020121839.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121020121849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560510060919 + 560510060920.

It is an arithmetic number, because the mean of its divisors is an integer number (560510060920).

Almost surely, 2^{1121020121839} is an apocalyptic number.

1121020121839 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121020121839 is an equidigital number, since it uses as much as digits as its factorization.

1121020121839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 31.

The spelling of 1121020121839 in words is "one trillion, one hundred twenty-one billion, twenty million, one hundred twenty-one thousand, eight hundred thirty-nine".