1111202110121 has 4 divisors (see below), whose sum is σ = 1111424400000. Its totient is φ = 1110979820244.

The previous prime is 1111202110087. The next prime is 1111202110127. The reversal of 1111202110121 is 1210112021111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1111202110121 - 2¹⁰ = 1111202109097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1111202110096 and 1111202110105.

It is not an unprimeable number, because it can be changed into a prime (1111202110127) 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, 111137441 + ... + 111147438.

It is an arithmetic number, because the mean of its divisors is an integer number (277856100000).

Almost surely, 2^{1111202110121} is an apocalyptic number.

It is an amenable number.

1111202110121 is a deficient number, since it is larger than the sum of its proper divisors (222289879).

1111202110121 is an equidigital number, since it uses as much as digits as its factorization.

1111202110121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222289878.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1111202110121 its reverse (1210112021111), we get a palindrome (2321314131232).

The spelling of 1111202110121 in words is "one trillion, one hundred eleven billion, two hundred two million, one hundred ten thousand, one hundred twenty-one".