21003320222 has 16 divisors (see below), whose sum is σ = 31670365392. Its totient is φ = 10446582720.

The previous prime is 21003320207. The next prime is 21003320237. The reversal of 21003320222 is 22202330012.

It is an interprime number because it is at equal distance from previous prime (21003320207) and next prime (21003320237).

It is a super-4 number, since 4×21003320222⁴ (a number of 42 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 21003320222.

It is a congruent number.

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, 897008 + ... + 920124.

It is an arithmetic number, because the mean of its divisors is an integer number (1979397837).

Almost surely, 2^21003320222 is an apocalyptic number.

21003320222 is a deficient number, since it is larger than the sum of its proper divisors (10667045170).

21003320222 is a wasteful number, since it uses less digits than its factorization.

21003320222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25483.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 21003320222 its reverse (22202330012), we get a palindrome (43205650234).

The spelling of 21003320222 in words is "twenty-one billion, three million, three hundred twenty thousand, two hundred twenty-two".