1121512211 has 2 divisors, whose sum is σ = 1121512212. Its totient is φ = 1121512210.

The previous prime is 1121512207. The next prime is 1121512289. The reversal of 1121512211 is 1122151211.

It is a weak prime.

It is an emirp because it is prime and its reverse (1122151211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1121512211 - 2² = 1121512207 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1121512211.

It is not a weakly prime, because it can be changed into another prime (1121517211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560756105 + 560756106.

It is an arithmetic number, because the mean of its divisors is an integer number (560756106).

Almost surely, 2^1121512211 is an apocalyptic number.

1121512211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121512211 is an equidigital number, since it uses as much as digits as its factorization.

1121512211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40, while the sum is 17.

The square root of 1121512211 is about 33488.9864134464. The cubic root of 1121512211 is about 1038.9659998576.

Adding to 1121512211 its reverse (1122151211), we get a palindrome (2243663422).

The spelling of 1121512211 in words is "one billion, one hundred twenty-one million, five hundred twelve thousand, two hundred eleven".