1121450213 has 8 divisors (see below), whose sum is σ = 1249361400. Its totient is φ = 999488448.

The previous prime is 1121450159. The next prime is 1121450219. The reversal of 1121450213 is 3120541211.

It can be written as a sum of positive squares in 4 ways, for example, as 2079364 + 1119370849 = 1442^2 + 33457^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1121450213 - 2⁸ = 1121449957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121450219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1486958 + ... + 1487711.

It is an arithmetic number, because the mean of its divisors is an integer number (156170175).

Almost surely, 2^1121450213 is an apocalyptic number.

1121450213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1121450213 is a deficient number, since it is larger than the sum of its proper divisors (127911187).

1121450213 is a wasteful number, since it uses less digits than its factorization.

1121450213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2974711.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1121450213 is about 33488.0607530505. The cubic root of 1121450213 is about 1038.9468545761.

Adding to 1121450213 its reverse (3120541211), we get a palindrome (4241991424).

The spelling of 1121450213 in words is "one billion, one hundred twenty-one million, four hundred fifty thousand, two hundred thirteen".