1220112121113 has 32 divisors (see below), whose sum is σ = 1946958041600. Its totient is φ = 752676252048.

The previous prime is 1220112121103. The next prime is 1220112121153. The reversal of 1220112121113 is 3111212110221.

It is a happy number.

It is not a de Polignac number, because 1220112121113 - 2¹⁶ = 1220112055577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220112121103) 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 31 ways as a sum of consecutive naturals, for example, 27633595 + ... + 27677712.

It is an arithmetic number, because the mean of its divisors is an integer number (60842438800).

Almost surely, 2^{1220112121113} is an apocalyptic number.

It is an amenable number.

1220112121113 is a deficient number, since it is larger than the sum of its proper divisors (726845920487).

1220112121113 is a wasteful number, since it uses less digits than its factorization.

1220112121113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55311378 (or 55311372 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 1220112121113 its reverse (3111212110221), we get a palindrome (4331324231334).

The spelling of 1220112121113 in words is "one trillion, two hundred twenty billion, one hundred twelve million, one hundred twenty-one thousand, one hundred thirteen".