21003022110 has 32 divisors (see below), whose sum is σ = 57608289792. Its totient is φ = 4800690720.

The previous prime is 21003022069. The next prime is 21003022121. The reversal of 21003022110 is 1122030012.

It is a super-4 number, since 4×21003022110⁴ (a number of 42 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50006986 + ... + 50007405.

It is an arithmetic number, because the mean of its divisors is an integer number (1800259056).

Almost surely, 2^21003022110 is an apocalyptic number.

21003022110 is an abundant number, since it is smaller than the sum of its proper divisors (36605267682).

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

21003022110 is a wasteful number, since it uses less digits than its factorization.

21003022110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100014408.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 21003022110 its reverse (1122030012), we get a palindrome (22125052122).

The spelling of 21003022110 in words is "twenty-one billion, three million, twenty-two thousand, one hundred ten".