21202022010 has 64 divisors (see below), whose sum is σ = 55341740160. Its totient is φ = 5167276800.

The previous prime is 21202021999. The next prime is 21202022029. The reversal of 21202022010 is 1022020212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 229740 + ... + 308519.

It is an arithmetic number, because the mean of its divisors is an integer number (864714690).

Almost surely, 2^21202022010 is an apocalyptic number.

21202022010 is an abundant number, since it is smaller than the sum of its proper divisors (34139718150).

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

21202022010 is a wasteful number, since it uses less digits than its factorization.

21202022010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538383.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 21202022010 its reverse (1022020212), we get a palindrome (22224042222).

It can be divided in two parts, 2120202 and 2010, that added together give a palindrome (2122212).

The spelling of 21202022010 in words is "twenty-one billion, two hundred two million, twenty-two thousand, ten".