1121567410861 has 2 divisors, whose sum is σ = 1121567410862. Its totient is φ = 1121567410860.

The previous prime is 1121567410841. The next prime is 1121567410871. The reversal of 1121567410861 is 1680147651211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 973811738761 + 147755672100 = 986819^2 + 384390^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121567410861 is a prime.

It is a super-2 number, since 2×1121567410861² (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 (1121567410841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560783705430 + 560783705431.

It is an arithmetic number, because the mean of its divisors is an integer number (560783705431).

Almost surely, 2^{1121567410861} is an apocalyptic number.

It is an amenable number.

1121567410861 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121567410861 is an equidigital number, since it uses as much as digits as its factorization.

1121567410861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 43.

The spelling of 1121567410861 in words is "one trillion, one hundred twenty-one billion, five hundred sixty-seven million, four hundred ten thousand, eight hundred sixty-one".