1220012012112 has 80 divisors (see below), whose sum is σ = 3274740671040. Its totient is φ = 390917718016.

The previous prime is 1220012012101. The next prime is 1220012012179. The reversal of 1220012012112 is 2112102100221.

It is a junction number, because it is equal to n+sod(n) for n = 1220012012091 and 1220012012100.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 1614513 + ... + 2246480.

It is an arithmetic number, because the mean of its divisors is an integer number (40934258388).

Almost surely, 2^{1220012012112} is an apocalyptic number.

1220012012112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1220012012112 is an abundant number, since it is smaller than the sum of its proper divisors (2054728658928).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1220012012112 is a wasteful number, since it uses less digits than its factorization.

1220012012112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3861260 (or 3861254 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1220012012112 its reverse (2112102100221), we get a palindrome (3332114112333).

The spelling of 1220012012112 in words is "one trillion, two hundred twenty billion, twelve million, twelve thousand, one hundred twelve".