1000211121018 has 16 divisors (see below), whose sum is σ = 2222691380160. Its totient is φ = 333403706988.

The previous prime is 1000211121011. The next prime is 1000211121029. The reversal of 1000211121018 is 8101211120001.

1000211121018 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1000211121011) 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, 9261214030 + ... + 9261214137.

It is an arithmetic number, because the mean of its divisors is an integer number (138918211260).

Almost surely, 2^{1000211121018} is an apocalyptic number.

1000211121018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1000211121018 is an abundant number, since it is smaller than the sum of its proper divisors (1222480259142).

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

1000211121018 is a wasteful number, since it uses less digits than its factorization.

1000211121018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18522428178 (or 18522428172 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 1000211121018 its reverse (8101211120001), we get a palindrome (9101422241019).

The spelling of 1000211121018 in words is "one trillion, two hundred eleven million, one hundred twenty-one thousand, eighteen".