1121211017 has 2 divisors, whose sum is σ = 1121211018. Its totient is φ = 1121211016.

The previous prime is 1121210983. The next prime is 1121211023. The reversal of 1121211017 is 7101121211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1121178256 + 32761 = 33484^2 + 181^2 .

It is an emirp because it is prime and its reverse (7101121211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1121211017 - 2⁶ = 1121210953 is a prime.

It is a super-2 number, since 2×1121211017² = 2514228289284348578, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1121210986 and 1121211004.

It is not a weakly prime, because it can be changed into another prime (1121271017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560605508 + 560605509.

It is an arithmetic number, because the mean of its divisors is an integer number (560605509).

Almost surely, 2^1121211017 is an apocalyptic number.

It is an amenable number.

1121211017 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121211017 is an equidigital number, since it uses as much as digits as its factorization.

1121211017 is an evil number, because the sum of its binary digits is even.

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

The square root of 1121211017 is about 33484.4892002252. The cubic root of 1121211017 is about 1038.8729830837.

Adding to 1121211017 its reverse (7101121211), we get a palindrome (8222332228).

The spelling of 1121211017 in words is "one billion, one hundred twenty-one million, two hundred eleven thousand, seventeen".