2221105604 has 6 divisors (see below), whose sum is σ = 3886934814. Its totient is φ = 1110552800.

The previous prime is 2221105583. The next prime is 2221105613. The reversal of 2221105604 is 4065011222.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2127054400 + 94051204 = 46120^2 + 9698^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2221105604.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277638197 + ... + 277638204.

It is an arithmetic number, because the mean of its divisors is an integer number (647822469).

Almost surely, 2^2221105604 is an apocalyptic number.

It is an amenable number.

2221105604 is a deficient number, since it is larger than the sum of its proper divisors (1665829210).

2221105604 is a wasteful number, since it uses less digits than its factorization.

2221105604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555276405 (or 555276403 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 2221105604 is about 47128.6070661971. The cubic root of 2221105604 is about 1304.7372731431.

Adding to 2221105604 its reverse (4065011222), we get a palindrome (6286116826).

The spelling of 2221105604 in words is "two billion, two hundred twenty-one million, one hundred five thousand, six hundred four".