1110202012121 has 4 divisors (see below), whose sum is σ = 1175508012852. Its totient is φ = 1044896011392.

The previous prime is 1110202012099. The next prime is 1110202012141. The reversal of 1110202012121 is 1212102020111.

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 394377720025 + 715824292096 = 627995^2 + 846064^2 .

It is a cyclic number.

It is not a de Polignac number, because 1110202012121 - 2¹⁰ = 1110202011097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1110202012096 and 1110202012105.

It is not an unprimeable number, because it can be changed into a prime (1110202012141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32653000340 + ... + 32653000373.

It is an arithmetic number, because the mean of its divisors is an integer number (293877003213).

Almost surely, 2^{1110202012121} is an apocalyptic number.

It is an amenable number.

1110202012121 is a deficient number, since it is larger than the sum of its proper divisors (65306000731).

1110202012121 is an equidigital number, since it uses as much as digits as its factorization.

1110202012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65306000730.

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

Adding to 1110202012121 its reverse (1212102020111), we get a palindrome (2322304032232).

The spelling of 1110202012121 in words is "one trillion, one hundred ten billion, two hundred two million, twelve thousand, one hundred twenty-one".