1121440213044 has 36 divisors (see below), whose sum is σ = 2868905291616. Its totient is φ = 369309627408.

The previous prime is 1121440213031. The next prime is 1121440213063. The reversal of 1121440213044 is 4403120441211.

1121440213044 is a `hidden beast` number, since 1 + 1 + 2 + 1 + 440 + 213 + 0 + 4 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 1121440212999 and 1121440213017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 187654344 + ... + 187660319.

It is an arithmetic number, because the mean of its divisors is an integer number (79691813656).

Almost surely, 2^{1121440213044} is an apocalyptic number.

It is an amenable number.

1121440213044 is an abundant number, since it is smaller than the sum of its proper divisors (1747465078572).

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

1121440213044 is a wasteful number, since it uses less digits than its factorization.

1121440213044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375314756 (or 375314751 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 1121440213044 its reverse (4403120441211), we get a palindrome (5524560654255).

The spelling of 1121440213044 in words is "one trillion, one hundred twenty-one billion, four hundred forty million, two hundred thirteen thousand, forty-four".