2125555212 has 72 divisors (see below), whose sum is σ = 5688603648. Its totient is φ = 616093280.

The previous prime is 2125555193. The next prime is 2125555241.

2125555212 is nontrivially palindromic in base 10.

2125555212 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 2125555212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1573 + ... + 65219.

It is an arithmetic number, because the mean of its divisors is an integer number (79008384).

Almost surely, 2^2125555212 is an apocalyptic number.

2125555212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2125555212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2844301824).

2125555212 is an abundant number, since it is smaller than the sum of its proper divisors (3563048436).

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

2125555212 is a wasteful number, since it uses less digits than its factorization.

2125555212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63699 (or 63686 counting only the distinct ones).

The product of its digits is 10000, while the sum is 30.

The square root of 2125555212 is about 46103.7440128239. The cubic root of 2125555212 is about 1285.7527547079.

It can be divided in two parts, 21255 and 55212, that added together give a palindrome (76467).

The spelling of 2125555212 in words is "two billion, one hundred twenty-five million, five hundred fifty-five thousand, two hundred twelve".