21220000010 has 32 divisors (see below), whose sum is σ = 42080943744. Its totient is φ = 7639960000.

The previous prime is 21220000001. The next prime is 21220000019. The reversal of 21220000010 is 1000002212.

It is an interprime number because it is at equal distance from previous prime (21220000001) and next prime (21220000019).

It is not an unprimeable number, because it can be changed into a prime (21220000019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 943886 + ... + 966105.

It is an arithmetic number, because the mean of its divisors is an integer number (1315029492).

Almost surely, 2^21220000010 is an apocalyptic number.

21220000010 is a deficient number, since it is larger than the sum of its proper divisors (20860943734).

21220000010 is a wasteful number, since it uses less digits than its factorization.

21220000010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1910110.

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 21220000010 its reverse (1000002212), we get a palindrome (22220002222).

The spelling of 21220000010 in words is "twenty-one billion, two hundred twenty million, ten", and thus it is an aban number.