2121418700 has 18 divisors (see below), whose sum is σ = 4603478796. Its totient is φ = 848567440.

The previous prime is 2121418699. The next prime is 2121418807. The reversal of 2121418700 is 78141212.

It is a self number, because there is not a number n which added to its sum of digits gives 2121418700.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10606994 + ... + 10607193.

It is an arithmetic number, because the mean of its divisors is an integer number (255748822).

Almost surely, 2^2121418700 is an apocalyptic number.

2121418700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121418700 is an abundant number, since it is smaller than the sum of its proper divisors (2482060096).

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

2121418700 is a wasteful number, since it uses less digits than its factorization.

2121418700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21214201 (or 21214194 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 2121418700 is about 46058.8612538348. The cubic root of 2121418700 is about 1284.9181515088.

Adding to 2121418700 its reverse (78141212), we get a palindrome (2199559912).

The spelling of 2121418700 in words is "two billion, one hundred twenty-one million, four hundred eighteen thousand, seven hundred".