2212123512 has 64 divisors (see below), whose sum is σ = 5690512800. Its totient is φ = 716175360.

The previous prime is 2212123439. The next prime is 2212123541. The reversal of 2212123512 is 2153212122.

2212123512 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 220428 + ... + 230244.

Almost surely, 2^2212123512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2212123512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2845256400).

2212123512 is an abundant number, since it is smaller than the sum of its proper divisors (3478389288).

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

2212123512 is a wasteful number, since it uses less digits than its factorization.

2212123512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10096 (or 10092 counting only the distinct ones).

The product of its digits is 480, while the sum is 21.

The square root of 2212123512 is about 47033.2171130149. The cubic root of 2212123512 is about 1302.9761227110.

Adding to 2212123512 its reverse (2153212122), we get a palindrome (4365335634).

The spelling of 2212123512 in words is "two billion, two hundred twelve million, one hundred twenty-three thousand, five hundred twelve".