1220112100012 has 24 divisors (see below), whose sum is σ = 2299485641600. Its totient is φ = 563117982336.

The previous prime is 1220112099977. The next prime is 1220112100027. The reversal of 1220112100012 is 2100012110221.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 1220112099965 and 1220112100001.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2986789 + ... + 3370627.

Almost surely, 2^{1220112100012} is an apocalyptic number.

It is an amenable number.

1220112100012 is a deficient number, since it is larger than the sum of its proper divisors (1079373541588).

1220112100012 is a wasteful number, since it uses less digits than its factorization.

1220112100012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444985 (or 444983 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1220112100012 its reverse (2100012110221), we get a palindrome (3320124210233).

The spelling of 1220112100012 in words is "one trillion, two hundred twenty billion, one hundred twelve million, one hundred thousand, twelve".