1123121107 has 2 divisors, whose sum is σ = 1123121108. Its totient is φ = 1123121106.

The previous prime is 1123121101. The next prime is 1123121123. The reversal of 1123121107 is 7011213211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1123121107 - 2¹⁵ = 1123088339 is a prime.

It is a super-3 number, since 3×1123121107³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (1123121101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561560553 + 561560554.

It is an arithmetic number, because the mean of its divisors is an integer number (561560554).

Almost surely, 2^1123121107 is an apocalyptic number.

1123121107 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123121107 is an equidigital number, since it uses as much as digits as its factorization.

1123121107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84, while the sum is 19.

The square root of 1123121107 is about 33512.9990749858. Note that the first 3 decimals coincide. The cubic root of 1123121107 is about 1039.4625881606.

Adding to 1123121107 its reverse (7011213211), we get a palindrome (8134334318).

The spelling of 1123121107 in words is "one billion, one hundred twenty-three million, one hundred twenty-one thousand, one hundred seven".