21002230110 has 16 divisors (see below), whose sum is σ = 50405352336. Its totient is φ = 5600594688.

The previous prime is 21002230037. The next prime is 21002230133. The reversal of 21002230110 is 1103220012.

It is a super-2 number, since 2×21002230110² (a number of 21 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 350037139 + ... + 350037198.

It is an arithmetic number, because the mean of its divisors is an integer number (3150334521).

Almost surely, 2^21002230110 is an apocalyptic number.

21002230110 is an abundant number, since it is smaller than the sum of its proper divisors (29403122226).

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

21002230110 is a wasteful number, since it uses less digits than its factorization.

21002230110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700074347.

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

Adding to 21002230110 its reverse (1103220012), we get a palindrome (22105450122).

The spelling of 21002230110 in words is "twenty-one billion, two million, two hundred thirty thousand, one hundred ten".