2221104312 has 48 divisors (see below), whose sum is σ = 6874848240. Its totient is φ = 634601088.

The previous prime is 2221104311. The next prime is 2221104323. The reversal of 2221104312 is 2134011222.

It is a happy number.

2221104312 is a `hidden beast` number, since 2 + 221 + 10 + 431 + 2 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221104311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2202973 + ... + 2203980.

It is an arithmetic number, because the mean of its divisors is an integer number (143226005).

Almost surely, 2^2221104312 is an apocalyptic number.

It is an amenable number.

2221104312 is an abundant number, since it is smaller than the sum of its proper divisors (4653743928).

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

2221104312 is a wasteful number, since it uses less digits than its factorization.

2221104312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4406972 (or 4406965 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2221104312 is about 47128.5933590214. The cubic root of 2221104312 is about 1304.7370201579.

Adding to 2221104312 its reverse (2134011222), we get a palindrome (4355115534).

The spelling of 2221104312 in words is "two billion, two hundred twenty-one million, one hundred four thousand, three hundred twelve".