1121210011 has 2 divisors, whose sum is σ = 1121210012. Its totient is φ = 1121210010.

The previous prime is 1121210009. The next prime is 1121210039. The reversal of 1121210011 is 1100121211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1121210011 - 2¹ = 1121210009 is a prime.

It is a super-2 number, since 2×1121210011² = 2514223777533240242, which contains 22 as substring.

Together with 1121210009, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1121210011.

It is not a weakly prime, because it can be changed into another prime (1121210081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560605005 + 560605006.

It is an arithmetic number, because the mean of its divisors is an integer number (560605006).

Almost surely, 2^1121210011 is an apocalyptic number.

1121210011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121210011 is an equidigital number, since it uses as much as digits as its factorization.

1121210011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4, while the sum is 10.

The square root of 1121210011 is about 33484.4741783412. The cubic root of 1121210011 is about 1038.8726723761.

Adding to 1121210011 its reverse (1100121211), we get a palindrome (2221331222).

The spelling of 1121210011 in words is "one billion, one hundred twenty-one million, two hundred ten thousand, eleven".