1121241213 has 6 divisors (see below), whose sum is σ = 1619570654. Its totient is φ = 747494136.

The previous prime is 1121241203. The next prime is 1121241221. The reversal of 1121241213 is 3121421211.

It can be written as a sum of positive squares in only one way, i.e., 823575204 + 297666009 = 28698^2 + 17253^2 .

It is not a de Polignac number, because 1121241213 - 2⁴ = 1121241197 is a prime.

It is a super-3 number, since 3×1121241213³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121241203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 62291170 + ... + 62291187.

Almost surely, 2^1121241213 is an apocalyptic number.

It is an amenable number.

1121241213 is a deficient number, since it is larger than the sum of its proper divisors (498329441).

1121241213 is a wasteful number, since it uses less digits than its factorization.

1121241213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124582363 (or 124582360 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 1121241213 is about 33484.9400925252. The cubic root of 1121241213 is about 1038.8823091685.

Adding to 1121241213 its reverse (3121421211), we get a palindrome (4242662424).

It can be divided in two parts, 11212 and 41213, that added together give a palindrome (52425).

The spelling of 1121241213 in words is "one billion, one hundred twenty-one million, two hundred forty-one thousand, two hundred thirteen".