1121221210313 has 4 divisors (see below), whose sum is σ = 1121224688580. Its totient is φ = 1121217732048.

The previous prime is 1121221210283. The next prime is 1121221210337. The reversal of 1121221210313 is 3130121221211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 849267304249 + 271953906064 = 921557^2 + 521492^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121221210313 - 2¹⁰ = 1121221209289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121221210363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1199870 + ... + 1918887.

It is an arithmetic number, because the mean of its divisors is an integer number (280306172145).

Almost surely, 2^{1121221210313} is an apocalyptic number.

It is an amenable number.

1121221210313 is a deficient number, since it is larger than the sum of its proper divisors (3478267).

1121221210313 is an equidigital number, since it uses as much as digits as its factorization.

1121221210313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3478266.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 1121221210313 its reverse (3130121221211), we get a palindrome (4251342431524).

The spelling of 1121221210313 in words is "one trillion, one hundred twenty-one billion, two hundred twenty-one million, two hundred ten thousand, three hundred thirteen".