21112010210 has 32 divisors (see below), whose sum is σ = 38599917120. Its totient is φ = 8312052672.

The previous prime is 21112010209. The next prime is 21112010233. The reversal of 21112010210 is 1201021112.

It is a junction number, because it is equal to n+sod(n) for n = 21112010191 and 21112010200.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 863636 + ... + 887744.

It is an arithmetic number, because the mean of its divisors is an integer number (1206247410).

Almost surely, 2^21112010210 is an apocalyptic number.

21112010210 is a deficient number, since it is larger than the sum of its proper divisors (17487906910).

21112010210 is a wasteful number, since it uses less digits than its factorization.

21112010210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25490.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21112010210 its reverse (1201021112), we get a palindrome (22313031322).

The spelling of 21112010210 in words is "twenty-one billion, one hundred twelve million, ten thousand, two hundred ten".