1122151211 has 2 divisors, whose sum is σ = 1122151212. Its totient is φ = 1122151210.

The previous prime is 1122151187. The next prime is 1122151223. The reversal of 1122151211 is 1121512211.

It is a strong prime.

It is an emirp because it is prime and its reverse (1121512211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1122151211 - 2¹⁰ = 1122150187 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1122151211.

It is not a weakly prime, because it can be changed into another prime (1122151291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561075605 + 561075606.

It is an arithmetic number, because the mean of its divisors is an integer number (561075606).

Almost surely, 2^1122151211 is an apocalyptic number.

1122151211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1122151211 is an equidigital number, since it uses as much as digits as its factorization.

1122151211 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 1122151211 is about 33498.5255048636. The cubic root of 1122151211 is about 1039.1632850404.

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

The spelling of 1122151211 in words is "one billion, one hundred twenty-two million, one hundred fifty-one thousand, two hundred eleven".