2124221204 has 48 divisors (see below), whose sum is σ = 4528742400. Its totient is φ = 851531616.

The previous prime is 2124221201. The next prime is 2124221219. The reversal of 2124221204 is 4021224212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2124221201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16757 + ... + 67299.

It is an arithmetic number, because the mean of its divisors is an integer number (94348800).

Almost surely, 2^2124221204 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 2124221204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2264371200).

2124221204 is an abundant number, since it is smaller than the sum of its proper divisors (2404521196).

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

2124221204 is a wasteful number, since it uses less digits than its factorization.

2124221204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50652 (or 50650 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 2124221204 is about 46089.2742837203. The cubic root of 2124221204 is about 1285.4837170153.

Adding to 2124221204 its reverse (4021224212), we get a palindrome (6145445416).

The spelling of 2124221204 in words is "two billion, one hundred twenty-four million, two hundred twenty-one thousand, two hundred four".