1112102020121 has 4 divisors (see below), whose sum is σ = 1112110100532. Its totient is φ = 1112093939712.

The previous prime is 1112102020097. The next prime is 1112102020153. The reversal of 1112102020121 is 1210202012111.

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 63536260096 + 1048565760025 = 252064^2 + 1023995^2 .

It is a cyclic number.

It is not a de Polignac number, because 1112102020121 - 2³⁴ = 1094922150937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1112102020096 and 1112102020105.

It is not an unprimeable number, because it can be changed into a prime (1112102022121) 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 3 ways as a sum of consecutive naturals, for example, 3830120 + ... + 4110233.

It is an arithmetic number, because the mean of its divisors is an integer number (278027525133).

Almost surely, 2^{1112102020121} is an apocalyptic number.

It is an amenable number.

1112102020121 is a deficient number, since it is larger than the sum of its proper divisors (8080411).

1112102020121 is an equidigital number, since it uses as much as digits as its factorization.

1112102020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8080410.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1112102020121 its reverse (1210202012111), we get a palindrome (2322304032232).

It can be divided in two parts, 11 and 12102020121, that multiplied together give a palindrome (133122221331).

The spelling of 1112102020121 in words is "one trillion, one hundred twelve billion, one hundred two million, twenty thousand, one hundred twenty-one".