1121212121113 has 16 divisors (see below), whose sum is σ = 1311272202240. Its totient is φ = 938626745616.

The previous prime is 1121212121041. The next prime is 1121212121143. The reversal of 1121212121113 is 3111212121211.

It is not a de Polignac number, because 1121212121113 - 2²¹ = 1121210023961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1121212121143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4720248 + ... + 4952086.

It is an arithmetic number, because the mean of its divisors is an integer number (81954512640).

Almost surely, 2^{1121212121113} is an apocalyptic number.

It is an amenable number.

1121212121113 is a deficient number, since it is larger than the sum of its proper divisors (190060081127).

1121212121113 is a wasteful number, since it uses less digits than its factorization.

1121212121113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247956.

The product of its digits is 48, while the sum is 19.

Adding to 1121212121113 its reverse (3111212121211), we get a palindrome (4232424242324).

The spelling of 1121212121113 in words is "one trillion, one hundred twenty-one billion, two hundred twelve million, one hundred twenty-one thousand, one hundred thirteen".