1021123221113 has 16 divisors (see below), whose sum is σ = 1088943313920. Its totient is φ = 954734948496.

The previous prime is 1021123221089. The next prime is 1021123221121. The reversal of 1021123221113 is 3111223211201.

It is a cyclic number.

It is not a de Polignac number, because 1021123221113 - 2¹⁴ = 1021123204729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021123221133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1190156 + ... + 1859762.

It is an arithmetic number, because the mean of its divisors is an integer number (68058957120).

Almost surely, 2^{1021123221113} is an apocalyptic number.

It is an amenable number.

1021123221113 is a deficient number, since it is larger than the sum of its proper divisors (67820092807).

1021123221113 is an equidigital number, since it uses as much as digits as its factorization.

1021123221113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670676.

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

Adding to 1021123221113 its reverse (3111223211201), we get a palindrome (4132346432314).

The spelling of 1021123221113 in words is "one trillion, twenty-one billion, one hundred twenty-three million, two hundred twenty-one thousand, one hundred thirteen".