1122212121112 has 16 divisors (see below), whose sum is σ = 2214892344600. Its totient is φ = 531574162560.

The previous prime is 1122212121059. The next prime is 1122212121167. The reversal of 1122212121112 is 2111212122211.

It is a happy number.

It is a super-2 number, since 2×1122212121112² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 1122212121112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3691487089 + ... + 3691487392.

Almost surely, 2^{1122212121112} is an apocalyptic number.

It is an amenable number.

1122212121112 is a deficient number, since it is larger than the sum of its proper divisors (1092680223488).

1122212121112 is a wasteful number, since it uses less digits than its factorization.

1122212121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7382974506 (or 7382974502 counting only the distinct ones).

The product of its digits is 64, while the sum is 19.

Adding to 1122212121112 its reverse (2111212122211), we get a palindrome (3233424243323).

The spelling of 1122212121112 in words is "one trillion, one hundred twenty-two billion, two hundred twelve million, one hundred twenty-one thousand, one hundred twelve".