1218201118000 has 80 divisors (see below), whose sum is σ = 3073680432576. Its totient is φ = 466094323200.

The previous prime is 1218201117983. The next prime is 1218201118027. The reversal of 1218201118000 is 8111028121.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13195317 + ... + 13287316.

Almost surely, 2^{1218201118000} is an apocalyptic number.

1218201118000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1218201118000 is an abundant number, since it is smaller than the sum of its proper divisors (1855479314576).

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

1218201118000 is a wasteful number, since it uses less digits than its factorization.

1218201118000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26482679 (or 26482663 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 25.

The spelling of 1218201118000 in words is "one trillion, two hundred eighteen billion, two hundred one million, one hundred eighteen thousand".