1222222104 has 24 divisors (see below), whose sum is σ = 3310185060. Its totient is φ = 407407344.

The previous prime is 1222222103. The next prime is 1222222121. The reversal of 1222222104 is 4012222221.

It is a tau number, because it is divible by the number of its divisors (24).

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 (1222222103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8487582 + ... + 8487725.

Almost surely, 2^1222222104 is an apocalyptic number.

It is an amenable number.

1222222104 is an abundant number, since it is smaller than the sum of its proper divisors (2087962956).

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

1222222104 is a wasteful number, since it uses less digits than its factorization.

1222222104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16975319 (or 16975312 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 1222222104 is about 34960.2932481980. The cubic root of 1222222104 is about 1069.1780755257.

Adding to 1222222104 its reverse (4012222221), we get a palindrome (5234444325).

The spelling of 1222222104 in words is "one billion, two hundred twenty-two million, two hundred twenty-two thousand, one hundred four".