1121003121437 has 2 divisors, whose sum is σ = 1121003121438. Its totient is φ = 1121003121436.

The previous prime is 1121003121431. The next prime is 1121003121451. The reversal of 1121003121437 is 7341213001211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 981167510521 + 139835610916 = 990539^2 + 373946^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121003121437 - 2¹² = 1121003117341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121003121431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560501560718 + 560501560719.

It is an arithmetic number, because the mean of its divisors is an integer number (560501560719).

Almost surely, 2^{1121003121437} is an apocalyptic number.

It is an amenable number.

1121003121437 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121003121437 is an equidigital number, since it uses as much as digits as its factorization.

1121003121437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 26.

Adding to 1121003121437 its reverse (7341213001211), we get a palindrome (8462216122648).

The spelling of 1121003121437 in words is "one trillion, one hundred twenty-one billion, three million, one hundred twenty-one thousand, four hundred thirty-seven".