1123211099 has 2 divisors, whose sum is σ = 1123211100. Its totient is φ = 1123211098.

The previous prime is 1123211081. The next prime is 1123211129. The reversal of 1123211099 is 9901123211.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1123211099 is a prime.

It is not a weakly prime, because it can be changed into another prime (1123211039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561605549 + 561605550.

It is an arithmetic number, because the mean of its divisors is an integer number (561605550).

Almost surely, 2^1123211099 is an apocalyptic number.

1123211099 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123211099 is an equidigital number, since it uses as much as digits as its factorization.

1123211099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 29.

The square root of 1123211099 is about 33514.3416912820. The cubic root of 1123211099 is about 1039.4903503251.

The spelling of 1123211099 in words is "one billion, one hundred twenty-three million, two hundred eleven thousand, ninety-nine".