20200102218 has 40 divisors (see below), whose sum is σ = 45285638112. Its totient is φ = 6730028424.

The previous prime is 20200102213. The next prime is 20200102229. The reversal of 20200102218 is 81220100202.

It is a happy number.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20200102218.

It is not an unprimeable number, because it can be changed into a prime (20200102211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 308221 + ... + 367967.

Almost surely, 2^20200102218 is an apocalyptic number.

20200102218 is an abundant number, since it is smaller than the sum of its proper divisors (25085535894).

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

20200102218 is a wasteful number, since it uses less digits than its factorization.

20200102218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61848 (or 61839 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The spelling of 20200102218 in words is "twenty billion, two hundred million, one hundred two thousand, two hundred eighteen".