1220012112112 has 20 divisors (see below), whose sum is σ = 2372306954056. Its totient is φ = 607803865920.

The previous prime is 1220012112091. The next prime is 1220012112119. The reversal of 1220012112112 is 2112112100221.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220012112119) 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, 137632314 + ... + 137641177.

Almost surely, 2^{1220012112112} is an apocalyptic number.

It is an amenable number.

1220012112112 is a deficient number, since it is larger than the sum of its proper divisors (1152294841944).

1220012112112 is a wasteful number, since it uses less digits than its factorization.

1220012112112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275273776 (or 275273770 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1220012112112 its reverse (2112112100221), we get a palindrome (3332124212333).

The spelling of 1220012112112 in words is "one trillion, two hundred twenty billion, twelve million, one hundred twelve thousand, one hundred twelve".