1228009994118 has 32 divisors (see below), whose sum is σ = 2731552956000. Its totient is φ = 408940386048.

The previous prime is 1228009994083. The next prime is 1228009994131. The reversal of 1228009994118 is 8114999008221.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10951443 + ... + 11063006.

It is an arithmetic number, because the mean of its divisors is an integer number (85361029875).

Almost surely, 2^{1228009994118} is an apocalyptic number.

1228009994118 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1228009994118 is an abundant number, since it is smaller than the sum of its proper divisors (1503542961882).

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

1228009994118 is a wasteful number, since it uses less digits than its factorization.

1228009994118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22015493 (or 22015487 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 54.

The spelling of 1228009994118 in words is "one trillion, two hundred twenty-eight billion, nine million, nine hundred ninety-four thousand, one hundred eighteen".