1121220304040 has 16 divisors (see below), whose sum is σ = 2522745684180. Its totient is φ = 448488121600.

The previous prime is 1121220304021. The next prime is 1121220304049. The reversal of 1121220304040 is 404030221211.

It can be written as a sum of positive squares in 2 ways, for example, as 930071217604 + 191149086436 = 964402^2 + 437206^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (1121220304049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14015253761 + ... + 14015253840.

Almost surely, 2^{1121220304040} is an apocalyptic number.

1121220304040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121220304040 is an abundant number, since it is smaller than the sum of its proper divisors (1401525380140).

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

1121220304040 is a wasteful number, since it uses less digits than its factorization.

1121220304040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28030507612 (or 28030507608 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 1121220304040 its reverse (404030221211), we get a palindrome (1525250525251).

The spelling of 1121220304040 in words is "one trillion, one hundred twenty-one billion, two hundred twenty million, three hundred four thousand, forty".