1121131229989 has 2 divisors, whose sum is σ = 1121131229990. Its totient is φ = 1121131229988.

The previous prime is 1121131229891. The next prime is 1121131230049. The reversal of 1121131229989 is 9899221311211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1104268908964 + 16862321025 = 1050842^2 + 129855^2 .

It is an emirp because it is prime and its reverse (9899221311211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1121131229989 - 2³¹ = 1118983746341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121131229489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560565614994 + 560565614995.

It is an arithmetic number, because the mean of its divisors is an integer number (560565614995).

Almost surely, 2^{1121131229989} is an apocalyptic number.

It is an amenable number.

1121131229989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121131229989 is an equidigital number, since it uses as much as digits as its factorization.

1121131229989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 49.

The spelling of 1121131229989 in words is "one trillion, one hundred twenty-one billion, one hundred thirty-one million, two hundred twenty-nine thousand, nine hundred eighty-nine".