21130100210 has 32 divisors (see below), whose sum is σ = 38622007872. Its totient is φ = 8321544000.

The previous prime is 21130100191. The next prime is 21130100231. The reversal of 21130100210 is 1200103112.

It is a super-2 number, since 2×21130100210² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21130100191 and 21130100200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1475585 + ... + 1489835.

It is an arithmetic number, because the mean of its divisors is an integer number (1206937746).

Almost surely, 2^21130100210 is an apocalyptic number.

21130100210 is a deficient number, since it is larger than the sum of its proper divisors (17491907662).

21130100210 is a wasteful number, since it uses less digits than its factorization.

21130100210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16538.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 21130100210 its reverse (1200103112), we get a palindrome (22330203322).

The spelling of 21130100210 in words is "twenty-one billion, one hundred thirty million, one hundred thousand, two hundred ten".