1121320200144 has 40 divisors (see below), whose sum is σ = 2901516156160. Its totient is φ = 373157618688.

The previous prime is 1121320200131. The next prime is 1121320200181. The reversal of 1121320200144 is 4410020231211.

It is a self number, because there is not a number n which added to its sum of digits gives 1121320200144.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19213729 + ... + 19272000.

It is an arithmetic number, because the mean of its divisors is an integer number (72537903904).

Almost surely, 2^{1121320200144} is an apocalyptic number.

It is an amenable number.

1121320200144 is an abundant number, since it is smaller than the sum of its proper divisors (1780195956016).

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

1121320200144 is a wasteful number, since it uses less digits than its factorization.

1121320200144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38486347 (or 38486341 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 1121320200144 its reverse (4410020231211), we get a palindrome (5531340431355).

The spelling of 1121320200144 in words is "one trillion, one hundred twenty-one billion, three hundred twenty million, two hundred thousand, one hundred forty-four".