21010112010010 has 128 divisors (see below), whose sum is σ = 41437933240320. Its totient is φ = 7645263225600.

The previous prime is 21010112010007. The next prime is 21010112010011. The reversal of 21010112010010 is 1001021101012.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (21010112010011) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2351961504 + ... + 2351970436.

It is an arithmetic number, because the mean of its divisors is an integer number (323733853440).

Almost surely, 2^{21010112010010} is an apocalyptic number.

21010112010010 is a deficient number, since it is larger than the sum of its proper divisors (20427821230310).

21010112010010 is a wasteful number, since it uses less digits than its factorization.

21010112010010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14644.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 21010112010010 its reverse (1001021101012), we get a palindrome (22011133111022).

The spelling of 21010112010010 in words is "twenty-one trillion, ten billion, one hundred twelve million, ten thousand, ten".