20000220210 has 24 divisors (see below), whose sum is σ = 52000572780. Its totient is φ = 5333392032.

The previous prime is 20000220203. The next prime is 20000220221. The reversal of 20000220210 is 1202200002.

It can be written as a sum of positive squares in 2 ways, for example, as 17288831169 + 2711389041 = 131487^2 + 52071^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20000220192 and 20000220201.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 111112245 + ... + 111112424.

Almost surely, 2^20000220210 is an apocalyptic number.

20000220210 is an abundant number, since it is smaller than the sum of its proper divisors (32000352570).

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

20000220210 is a wasteful number, since it uses less digits than its factorization.

20000220210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222224682 (or 222224679 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 20000220210 its reverse (1202200002), we get a palindrome (21202420212).

The spelling of 20000220210 in words is "twenty billion, two hundred twenty thousand, two hundred ten".