1121020122437 has 2 divisors, whose sum is σ = 1121020122438. Its totient is φ = 1121020122436.

The previous prime is 1121020122421. The next prime is 1121020122451. The reversal of 1121020122437 is 7342210201211.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 992874737761 + 128145384676 = 996431^2 + 357974^2 .

It is an emirp because it is prime and its reverse (7342210201211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1121020122437 - 2⁴ = 1121020122421 is a prime.

It is a super-2 number, since 2×1121020122437² (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 (1121020122407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560510061218 + 560510061219.

It is an arithmetic number, because the mean of its divisors is an integer number (560510061219).

Almost surely, 2^{1121020122437} is an apocalyptic number.

It is an amenable number.

1121020122437 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121020122437 is an equidigital number, since it uses as much as digits as its factorization.

1121020122437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 26.

Adding to 1121020122437 its reverse (7342210201211), we get a palindrome (8463230323648).

The spelling of 1121020122437 in words is "one trillion, one hundred twenty-one billion, twenty million, one hundred twenty-two thousand, four hundred thirty-seven".