1112221020121 has 8 divisors (see below), whose sum is σ = 1112639041800. Its totient is φ = 1111803073920.

The previous prime is 1112221020067. The next prime is 1112221020133. The reversal of 1112221020121 is 1210201222111.

It can be written as a sum of positive squares in 4 ways, for example, as 95582378896 + 1016638641225 = 309164^2 + 1008285^2 .

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 1112221020121 - 2³⁷ = 974782066649 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1112221020095 and 1112221020104.

It is not an unprimeable number, because it can be changed into a prime (1112221020221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65304835 + ... + 65321863.

It is an arithmetic number, because the mean of its divisors is an integer number (139079880225).

Almost surely, 2^{1112221020121} is an apocalyptic number.

It is an amenable number.

1112221020121 is a deficient number, since it is larger than the sum of its proper divisors (418021679).

1112221020121 is a wasteful number, since it uses less digits than its factorization.

1112221020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37739.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1112221020121 its reverse (1210201222111), we get a palindrome (2322422242232).

The spelling of 1112221020121 in words is "one trillion, one hundred twelve billion, two hundred twenty-one million, twenty thousand, one hundred twenty-one".