1121021112112 has 40 divisors (see below), whose sum is σ = 2375086109760. Its totient is φ = 508338895680.

The previous prime is 1121021112049. The next prime is 1121021112121. The reversal of 1121021112112 is 2112111201211.

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

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 7 ways as a sum of consecutive naturals, for example, 7527018 + ... + 7674505.

It is an arithmetic number, because the mean of its divisors is an integer number (59377152744).

Almost surely, 2^{1121021112112} is an apocalyptic number.

It is an amenable number.

1121021112112 is an abundant number, since it is smaller than the sum of its proper divisors (1254064997648).

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

1121021112112 is a wasteful number, since it uses less digits than its factorization.

1121021112112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15201961 (or 15201955 counting only the distinct ones).

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

Adding to 1121021112112 its reverse (2112111201211), we get a palindrome (3233132313323).

The spelling of 1121021112112 in words is "one trillion, one hundred twenty-one billion, twenty-one million, one hundred twelve thousand, one hundred twelve".