20210340210 has 16 divisors (see below), whose sum is σ = 48504816576. Its totient is φ = 5389424048.

The previous prime is 20210340193. The next prime is 20210340221. The reversal of 20210340210 is 1204301202.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20210340210.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 336838974 + ... + 336839033.

It is an arithmetic number, because the mean of its divisors is an integer number (3031551036).

Almost surely, 2^20210340210 is an apocalyptic number.

20210340210 is an abundant number, since it is smaller than the sum of its proper divisors (28294476366).

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

20210340210 is a wasteful number, since it uses less digits than its factorization.

20210340210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673678017.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 20210340210 its reverse (1204301202), we get a palindrome (21414641412).

The spelling of 20210340210 in words is "twenty billion, two hundred ten million, three hundred forty thousand, two hundred ten".