1211122163 has 2 divisors, whose sum is σ = 1211122164. Its totient is φ = 1211122162.

The previous prime is 1211122141. The next prime is 1211122169. The reversal of 1211122163 is 3612211121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1211122163 - 2¹⁰ = 1211121139 is a prime.

It is not a weakly prime, because it can be changed into another prime (1211122169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605561081 + 605561082.

It is an arithmetic number, because the mean of its divisors is an integer number (605561082).

Almost surely, 2^1211122163 is an apocalyptic number.

1211122163 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211122163 is an equidigital number, since it uses as much as digits as its factorization.

1211122163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144, while the sum is 20.

The square root of 1211122163 is about 34801.1804828514. The cubic root of 1211122163 is about 1065.9315507983.

Adding to 1211122163 its reverse (3612211121), we get a palindrome (4823333284).

The spelling of 1211122163 in words is "one billion, two hundred eleven million, one hundred twenty-two thousand, one hundred sixty-three".