21112120210010 has 16 divisors (see below), whose sum is σ = 38005460425800. Its totient is φ = 8444038295616.

The previous prime is 21112120209967. The next prime is 21112120210019. The reversal of 21112120210010 is 1001202121112.

It can be written as a sum of positive squares in 4 ways, for example, as 19707997118161 + 1404123091849 = 4439369^2 + 1184957^2 .

It is not an unprimeable number, because it can be changed into a prime (21112120210019) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 101114045 + ... + 101322624.

Almost surely, 2^{21112120210010} is an apocalyptic number.

21112120210010 is a deficient number, since it is larger than the sum of its proper divisors (16893340215790).

21112120210010 is a wasteful number, since it uses less digits than its factorization.

21112120210010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202447105.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21112120210010 its reverse (1001202121112), we get a palindrome (22113322331122).

The spelling of 21112120210010 in words is "twenty-one trillion, one hundred twelve billion, one hundred twenty million, two hundred ten thousand, ten".