1218106011 has 16 divisors (see below), whose sum is σ = 1652791040. Its totient is φ = 797778720.

The previous prime is 1218106007. The next prime is 1218106051. The reversal of 1218106011 is 1106018121.

It is a happy number.

It is not a de Polignac number, because 1218106011 - 2² = 1218106007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1218106051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164556 + ... + 171798.

It is an arithmetic number, because the mean of its divisors is an integer number (103299440).

Almost surely, 2^1218106011 is an apocalyptic number.

1218106011 is a deficient number, since it is larger than the sum of its proper divisors (434685029).

1218106011 is an equidigital number, since it uses as much as digits as its factorization.

1218106011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8226.

The product of its (nonzero) digits is 96, while the sum is 21.

The square root of 1218106011 is about 34901.3754886537. The cubic root of 1218106011 is about 1067.9764974348.

The spelling of 1218106011 in words is "one billion, two hundred eighteen million, one hundred six thousand, eleven".