1218200000067 has 8 divisors (see below), whose sum is σ = 1804740740880. Its totient is φ = 812133333360.

The previous prime is 1218200000029. The next prime is 1218200000071. The reversal of 1218200000067 is 7600000028121.

It is not a de Polignac number, because 1218200000067 - 2⁸ = 1218199999811 is a prime.

It is a super-2 number, since 2×1218200000067² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 45118518521 = 1218200000067 / (1 + 2 + 1 + 8 + 2 + 0 + 0 + 0 + 0 + 0 + 0 + 6 + 7).

It is not an unprimeable number, because it can be changed into a prime (1218200000167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22559259234 + ... + 22559259287.

It is an arithmetic number, because the mean of its divisors is an integer number (225592592610).

Almost surely, 2^{1218200000067} is an apocalyptic number.

1218200000067 is a deficient number, since it is larger than the sum of its proper divisors (586540740813).

1218200000067 is an equidigital number, since it uses as much as digits as its factorization.

1218200000067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45118518530 (or 45118518524 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

Adding to 1218200000067 its reverse (7600000028121), we get a palindrome (8818200028188).

The spelling of 1218200000067 in words is "one trillion, two hundred eighteen billion, two hundred million, sixty-seven", and thus it is an aban number.