218015511102 has 12 divisors (see below), whose sum is σ = 472366940760. Its totient is φ = 72671837028.

The previous prime is 218015511101. The next prime is 218015511149. The reversal of 218015511102 is 201115510812.

218015511102 is a `hidden beast` number, since 2 + 1 + 8 + 0 + 1 + 551 + 1 + 102 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218015511101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6055986402 + ... + 6055986437.

It is an arithmetic number, because the mean of its divisors is an integer number (39363911730).

Almost surely, 2^218015511102 is an apocalyptic number.

218015511102 is an abundant number, since it is smaller than the sum of its proper divisors (254351429658).

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

218015511102 is a wasteful number, since it uses less digits than its factorization.

218015511102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12111972847 (or 12111972844 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 27.

The spelling of 218015511102 in words is "two hundred eighteen billion, fifteen million, five hundred eleven thousand, one hundred two".