2221431204 has 48 divisors (see below), whose sum is σ = 5373950400. Its totient is φ = 713360256.

The previous prime is 2221431203. The next prime is 2221431253. The reversal of 2221431204 is 4021341222.

It is not an unprimeable number, because it can be changed into a prime (2221431203) 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, 155682 + ... + 169350.

It is an arithmetic number, because the mean of its divisors is an integer number (111957300).

Almost surely, 2^2221431204 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 2221431204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2686975200).

2221431204 is an abundant number, since it is smaller than the sum of its proper divisors (3152519196).

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

2221431204 is a wasteful number, since it uses less digits than its factorization.

2221431204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14172 (or 14170 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 2221431204 is about 47132.0613171119. The cubic root of 2221431204 is about 1304.8010254321.

Adding to 2221431204 its reverse (4021341222), we get a palindrome (6242772426).

The spelling of 2221431204 in words is "two billion, two hundred twenty-one million, four hundred thirty-one thousand, two hundred four".