21120112010010 has 64 divisors (see below), whose sum is σ = 54598238972928. Its totient is φ = 5197761321984.

The previous prime is 21120112009991. The next prime is 21120112010059. The reversal of 21120112010010 is 1001021102112.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3431647 + ... + 7349586.

It is an arithmetic number, because the mean of its divisors is an integer number (853097483952).

Almost surely, 2^{21120112010010} is an apocalyptic number.

21120112010010 is an abundant number, since it is smaller than the sum of its proper divisors (33478126962918).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21120112010010 is a wasteful number, since it uses less digits than its factorization.

21120112010010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10786279.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 21120112010010 its reverse (1001021102112), we get a palindrome (22121133112122).

The spelling of 21120112010010 in words is "twenty-one trillion, one hundred twenty billion, one hundred twelve million, ten thousand, ten".