21120112420410 has 64 divisors (see below), whose sum is σ = 50793511680000. Its totient is φ = 5620338073152.

The previous prime is 21120112420387. The next prime is 21120112420417. The reversal of 21120112420410 is 1402421102112.

It is not an unprimeable number, because it can be changed into a prime (21120112420417) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 247965411 + ... + 248050569.

It is an arithmetic number, because the mean of its divisors is an integer number (793648620000).

Almost surely, 2^{21120112420410} is an apocalyptic number.

21120112420410 is an abundant number, since it is smaller than the sum of its proper divisors (29673399259590).

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

21120112420410 is a wasteful number, since it uses less digits than its factorization.

21120112420410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102235.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 21120112420410 its reverse (1402421102112), we get a palindrome (22522533522522).

The spelling of 21120112420410 in words is "twenty-one trillion, one hundred twenty billion, one hundred twelve million, four hundred twenty thousand, four hundred ten".