2112421110 has 64 divisors (see below), whose sum is σ = 5250852864. Its totient is φ = 543536000.

The previous prime is 2112421109. The next prime is 2112421117. The reversal of 2112421110 is 111242112.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2112421110.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112421117) 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, 89560 + ... + 110660.

It is an arithmetic number, because the mean of its divisors is an integer number (82044576).

Almost surely, 2^2112421110 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2112421110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2625426432).

2112421110 is an abundant number, since it is smaller than the sum of its proper divisors (3138431754).

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

2112421110 is a wasteful number, since it uses less digits than its factorization.

2112421110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21229.

The product of its (nonzero) digits is 32, while the sum is 15.

The square root of 2112421110 is about 45961.0825590521. The cubic root of 2112421110 is about 1283.0989993606.

Adding to 2112421110 its reverse (111242112), we get a palindrome (2223663222).

The spelling of 2112421110 in words is "two billion, one hundred twelve million, four hundred twenty-one thousand, one hundred ten".