1121121282637 has 2 divisors, whose sum is σ = 1121121282638. Its totient is φ = 1121121282636.

The previous prime is 1121121282623. The next prime is 1121121282647. The reversal of 1121121282637 is 7362821211211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 892129364676 + 228991917961 = 944526^2 + 478531^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121121282637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1121121282596 and 1121121282605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121121282647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560560641318 + 560560641319.

It is an arithmetic number, because the mean of its divisors is an integer number (560560641319).

Almost surely, 2^{1121121282637} is an apocalyptic number.

It is an amenable number.

1121121282637 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121121282637 is an equidigital number, since it uses as much as digits as its factorization.

1121121282637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 37.

Adding to 1121121282637 its reverse (7362821211211), we get a palindrome (8483942493848).

The spelling of 1121121282637 in words is "one trillion, one hundred twenty-one billion, one hundred twenty-one million, two hundred eighty-two thousand, six hundred thirty-seven".