2321221404 has 12 divisors (see below), whose sum is σ = 5416183304. Its totient is φ = 773740464.

The previous prime is 2321221403. The next prime is 2321221411. The reversal of 2321221404 is 4041221232.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2321221403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96717547 + ... + 96717570.

Almost surely, 2^2321221404 is an apocalyptic number.

It is an amenable number.

2321221404 is an abundant number, since it is smaller than the sum of its proper divisors (3094961900).

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

2321221404 is a wasteful number, since it uses less digits than its factorization.

2321221404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193435124 (or 193435122 counting only the distinct ones).

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

The square root of 2321221404 is about 48179.0556569968. The cubic root of 2321221404 is about 1324.0534650115.

Adding to 2321221404 its reverse (4041221232), we get a palindrome (6362442636).

The spelling of 2321221404 in words is "two billion, three hundred twenty-one million, two hundred twenty-one thousand, four hundred four".