21112210010 has 16 divisors (see below), whose sum is σ = 38004199272. Its totient is φ = 8444390400.

The previous prime is 21112210003. The next prime is 21112210013. The reversal of 21112210010 is 1001221112.

It can be written as a sum of positive squares in 4 ways, for example, as 20507099209 + 605110801 = 143203^2 + 24599^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21112209973 and 21112210000.

It is not an unprimeable number, because it can be changed into a prime (21112210013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153770 + ... + 256650.

Almost surely, 2^21112210010 is an apocalyptic number.

21112210010 is a deficient number, since it is larger than the sum of its proper divisors (16891989262).

21112210010 is a wasteful number, since it uses less digits than its factorization.

21112210010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123409.

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

Adding to 21112210010 its reverse (1001221112), we get a palindrome (22113431122).

The spelling of 21112210010 in words is "twenty-one billion, one hundred twelve million, two hundred ten thousand, ten".