1122220121112 has 48 divisors (see below), whose sum is σ = 3039523475040. Its totient is φ = 374051550528.

The previous prime is 1122220121107. The next prime is 1122220121159. The reversal of 1122220121112 is 2111210222211.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 11 ways as a sum of consecutive naturals, for example, 812433 + ... + 1704255.

It is an arithmetic number, because the mean of its divisors is an integer number (63323405730).

Almost surely, 2^{1122220121112} is an apocalyptic number.

1122220121112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1122220121112 is an abundant number, since it is smaller than the sum of its proper divisors (1917303353928).

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

1122220121112 is a wasteful number, since it uses less digits than its factorization.

1122220121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909312 (or 909305 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 1122220121112 its reverse (2111210222211), we get a palindrome (3233430343323).

The spelling of 1122220121112 in words is "one trillion, one hundred twenty-two billion, two hundred twenty million, one hundred twenty-one thousand, one hundred twelve".