1121210117 has 2 divisors, whose sum is σ = 1121210118. Its totient is φ = 1121210116.

The previous prime is 1121210113. The next prime is 1121210137. The reversal of 1121210117 is 7110121211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 664917796 + 456292321 = 25786^2 + 21361^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121210117 - 2² = 1121210113 is a prime.

It is a super-2 number, since 2×1121210117² = 2514224252926307378, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1121210095 and 1121210104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121210113) 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, 560605058 + 560605059.

It is an arithmetic number, because the mean of its divisors is an integer number (560605059).

Almost surely, 2^1121210117 is an apocalyptic number.

It is an amenable number.

1121210117 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121210117 is an equidigital number, since it uses as much as digits as its factorization.

1121210117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28, while the sum is 17.

The square root of 1121210117 is about 33484.4757611643. The cubic root of 1121210117 is about 1038.8727051147.

Adding to 1121210117 its reverse (7110121211), we get a palindrome (8231331328).

The spelling of 1121210117 in words is "one billion, one hundred twenty-one million, two hundred ten thousand, one hundred seventeen".