1221130022113 has 8 divisors (see below), whose sum is σ = 1265298719400. Its totient is φ = 1177098709248.

The previous prime is 1221130022089. The next prime is 1221130022129. The reversal of 1221130022113 is 3112200311221.

It can be written as a sum of positive squares in 4 ways, for example, as 212615976609 + 1008514045504 = 461103^2 + 1004248^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1221130022113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1221130022513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34328008 + ... + 34363561.

It is an arithmetic number, because the mean of its divisors is an integer number (158162339925).

Almost surely, 2^{1221130022113} is an apocalyptic number.

It is an amenable number.

1221130022113 is a deficient number, since it is larger than the sum of its proper divisors (44168697287).

1221130022113 is an equidigital number, since it uses as much as digits as its factorization.

1221130022113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68692211.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1221130022113 its reverse (3112200311221), we get a palindrome (4333330333334).

The spelling of 1221130022113 in words is "one trillion, two hundred twenty-one billion, one hundred thirty million, twenty-two thousand, one hundred thirteen".