21222022010 has 96 divisors (see below), whose sum is σ = 45182085120. Its totient is φ = 7154784000.

The previous prime is 21222021979. The next prime is 21222022021. The reversal of 21222022010 is 1022022212.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10876535 + ... + 10878485.

It is an arithmetic number, because the mean of its divisors is an integer number (470646720).

Almost surely, 2^21222022010 is an apocalyptic number.

21222022010 is an abundant number, since it is smaller than the sum of its proper divisors (23960063110).

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

21222022010 is a wasteful number, since it uses less digits than its factorization.

21222022010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2332 (or 2325 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 21222022010 its reverse (1022022212), we get a palindrome (22244044222).

It can be divided in two parts, 2122202 and 2010, that added together give a palindrome (2124212).

The spelling of 21222022010 in words is "twenty-one billion, two hundred twenty-two million, twenty-two thousand, ten".