1211330122 has 4 divisors (see below), whose sum is σ = 1816995186. Its totient is φ = 605665060.

The previous prime is 1211330089. The next prime is 1211330129. The reversal of 1211330122 is 2210331121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2210331121 = 4327 ⋅510823.

It can be written as a sum of positive squares in only one way, i.e., 756745081 + 454585041 = 27509^2 + 21321^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1211330096 and 1211330105.

It is not an unprimeable number, because it can be changed into a prime (1211330129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302832529 + ... + 302832532.

Almost surely, 2^1211330122 is an apocalyptic number.

1211330122 is a deficient number, since it is larger than the sum of its proper divisors (605665064).

1211330122 is an equidigital number, since it uses as much as digits as its factorization.

1211330122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605665063.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1211330122 is about 34804.1681699190. The cubic root of 1211330122 is about 1065.9925568580.

Adding to 1211330122 its reverse (2210331121), we get a palindrome (3421661243).

Subtracting 1211330122 from its reverse (2210331121), we obtain a palindrome (999000999).

The spelling of 1211330122 in words is "one billion, two hundred eleven million, three hundred thirty thousand, one hundred twenty-two".