1121210347 has 2 divisors, whose sum is σ = 1121210348. Its totient is φ = 1121210346.

The previous prime is 1121210309. The next prime is 1121210351. The reversal of 1121210347 is 7430121211.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1121210347 - 2⁷ = 1121210219 is a prime.

It is a super-2 number, since 2×1121210347² = 2514225284439720818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1121211347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560605173 + 560605174.

It is an arithmetic number, because the mean of its divisors is an integer number (560605174).

Almost surely, 2^1121210347 is an apocalyptic number.

1121210347 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121210347 is an equidigital number, since it uses as much as digits as its factorization.

1121210347 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 1121210347 is about 33484.4791955915. The cubic root of 1121210347 is about 1038.8727761512.

Adding to 1121210347 its reverse (7430121211), we get a palindrome (8551331558).

The spelling of 1121210347 in words is "one billion, one hundred twenty-one million, two hundred ten thousand, three hundred forty-seven".