20020020210 has 64 divisors (see below), whose sum is σ = 53399295360. Its totient is φ = 5337414720.

The previous prime is 20020020191. The next prime is 20020020221. The reversal of 20020020210 is 1202002002.

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

It is a junction number, because it is equal to n+sod(n) for n = 20020020192 and 20020020201.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1961320 + ... + 1971500.

It is an arithmetic number, because the mean of its divisors is an integer number (834363990).

Almost surely, 2^20020020210 is an apocalyptic number.

20020020210 is an abundant number, since it is smaller than the sum of its proper divisors (33379275150).

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

20020020210 is a wasteful number, since it uses less digits than its factorization.

20020020210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17480 (or 17474 counting only the distinct ones).

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

Adding to 20020020210 its reverse (1202002002), we get a palindrome (21222022212).

The spelling of 20020020210 in words is "twenty billion, twenty million, twenty thousand, two hundred ten".