10211011218 has 48 divisors (see below), whose sum is σ = 22632993240. Its totient is φ = 3326199552.

The previous prime is 10211011183. The next prime is 10211011219. The reversal of 10211011218 is 81211011201.

It can be written as a sum of positive squares in 4 ways, for example, as 10045451529 + 165559689 = 100227^2 + 12867^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 10211011218.

It is not an unprimeable number, because it can be changed into a prime (10211011219) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 107580 + ... + 178872.

Almost surely, 2^10211011218 is an apocalyptic number.

10211011218 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

10211011218 is an abundant number, since it is smaller than the sum of its proper divisors (12421982022).

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

10211011218 is a wasteful number, since it uses less digits than its factorization.

10211011218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71483 (or 71480 counting only the distinct ones).

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

Adding to 10211011218 its reverse (81211011201), we get a palindrome (91422022419).

The spelling of 10211011218 in words is "ten billion, two hundred eleven million, eleven thousand, two hundred eighteen".