2123773212 has 96 divisors (see below), whose sum is σ = 5878897920. Its totient is φ = 589317120.

The previous prime is 2123773199. The next prime is 2123773219.

2123773212 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 2123773212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123773219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70239 + ... + 95817.

It is an arithmetic number, because the mean of its divisors is an integer number (61238520).

Almost surely, 2^2123773212 is an apocalyptic number.

2123773212 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 2123773212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2939448960).

2123773212 is an abundant number, since it is smaller than the sum of its proper divisors (3755124708).

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

2123773212 is a wasteful number, since it uses less digits than its factorization.

2123773212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25651 (or 25649 counting only the distinct ones).

The product of its digits is 7056, while the sum is 30.

The square root of 2123773212 is about 46084.4139813017. The cubic root of 2123773212 is about 1285.3933424176.

It can be divided in two parts, 21237 and 73212, that added together give a palindrome (94449).

The spelling of 2123773212 in words is "two billion, one hundred twenty-three million, seven hundred seventy-three thousand, two hundred twelve".