21200220010 has 32 divisors (see below), whose sum is σ = 38478540672. Its totient is φ = 8409670080.

The previous prime is 21200219987. The next prime is 21200220049. The reversal of 21200220010 is 1002200212.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 595369 + ... + 629971.

It is an arithmetic number, because the mean of its divisors is an integer number (1202454396).

Almost surely, 2^21200220010 is an apocalyptic number.

21200220010 is a deficient number, since it is larger than the sum of its proper divisors (17278320662).

21200220010 is a wasteful number, since it uses less digits than its factorization.

21200220010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35118.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 21200220010 its reverse (1002200212), we get a palindrome (22202420222).

The spelling of 21200220010 in words is "twenty-one billion, two hundred million, two hundred twenty thousand, ten".