111000102121218 has 16 divisors (see below), whose sum is σ = 224074972507680. Its totient is φ = 36654239329536.

The previous prime is 111000102121211. The next prime is 111000102121219. The reversal of 111000102121218 is 812121201000111.

It is a junction number, because it is equal to n+sod(n) for n = 111000102121194 and 111000102121203.

It is not an unprimeable number, because it can be changed into a prime (111000102121211) 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, 86448677023 + ... + 86448678306.

It is an arithmetic number, because the mean of its divisors is an integer number (14004685781730).

Almost surely, 2^{111000102121218} is an apocalyptic number.

111000102121218 is an abundant number, since it is smaller than the sum of its proper divisors (113074870386462).

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

111000102121218 is a wasteful number, since it uses less digits than its factorization.

111000102121218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172897355441.

The product of its (nonzero) digits is 64, while the sum is 21.

Adding to 111000102121218 its reverse (812121201000111), we get a palindrome (923121303121329).

The spelling of 111000102121218 in words is "one hundred eleven trillion, one hundred two million, one hundred twenty-one thousand, two hundred eighteen".