2112111210 has 64 divisors (see below), whose sum is σ = 5549814144. Its totient is φ = 510182400.

The previous prime is 2112111191. The next prime is 2112111217. The reversal of 2112111210 is 121112112.

It is a super-2 number, since 2×2112111210² = 8922027526815328200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2112111217) 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, 81342 + ... + 104118.

It is an arithmetic number, because the mean of its divisors is an integer number (86715846).

Almost surely, 2^2112111210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2112111210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2774907072).

2112111210 is an abundant number, since it is smaller than the sum of its proper divisors (3437702934).

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

2112111210 is a wasteful number, since it uses less digits than its factorization.

2112111210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23079.

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

The square root of 2112111210 is about 45957.7111048842. The cubic root of 2112111210 is about 1283.0362511670.

Adding to 2112111210 its reverse (121112112), we get a palindrome (2233223322).

The spelling of 2112111210 in words is "two billion, one hundred twelve million, one hundred eleven thousand, two hundred ten".