2123222004 has 96 divisors (see below), whose sum is σ = 5899098240. Its totient is φ = 658036224.

The previous prime is 2123221993. The next prime is 2123222011. The reversal of 2123222004 is 4002223212.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 145422 + ... + 159354.

It is an arithmetic number, because the mean of its divisors is an integer number (61448940).

Almost surely, 2^2123222004 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 2123222004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2949549120).

2123222004 is an abundant number, since it is smaller than the sum of its proper divisors (3775876236).

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

2123222004 is a wasteful number, since it uses less digits than its factorization.

2123222004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14046 (or 14038 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 2123222004 is about 46078.4331764872. The cubic root of 2123222004 is about 1285.2821283458.

Adding to 2123222004 its reverse (4002223212), we get a palindrome (6125445216).

The spelling of 2123222004 in words is "two billion, one hundred twenty-three million, two hundred twenty-two thousand, four".