1243211122 has 16 divisors (see below), whose sum is σ = 1978418520. Its totient is φ = 583883008.

The previous prime is 1243211119. The next prime is 1243211131. The reversal of 1243211122 is 2211123421.

It can be written as a sum of positive squares in 4 ways, for example, as 1241082441 + 2128681 = 35229^2 + 1459^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1243211122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18613 + ... + 53224.

Almost surely, 2^1243211122 is an apocalyptic number.

1243211122 is a deficient number, since it is larger than the sum of its proper divisors (735207398).

1243211122 is a wasteful number, since it uses less digits than its factorization.

1243211122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72365.

The product of its digits is 192, while the sum is 19.

The square root of 1243211122 is about 35259.1991117212. The cubic root of 1243211122 is about 1075.2636445839.

Adding to 1243211122 its reverse (2211123421), we get a palindrome (3454334543).

The spelling of 1243211122 in words is "one billion, two hundred forty-three million, two hundred eleven thousand, one hundred twenty-two".