1222105408 has 28 divisors (see below), whose sum is σ = 2481519040. Its totient is φ = 596840832.

The previous prime is 1222105373. The next prime is 1222105447. The reversal of 1222105408 is 8045012221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219288 + ... + 224791.

It is an arithmetic number, because the mean of its divisors is an integer number (88625680).

Almost surely, 2^1222105408 is an apocalyptic number.

It is an amenable number.

1222105408 is an abundant number, since it is smaller than the sum of its proper divisors (1259413632).

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

1222105408 is an equidigital number, since it uses as much as digits as its factorization.

1222105408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444134 (or 444124 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 1222105408 is about 34958.6242292228. The cubic root of 1222105408 is about 1069.1440465836.

Adding to 1222105408 its reverse (8045012221), we get a palindrome (9267117629).

The spelling of 1222105408 in words is "one billion, two hundred twenty-two million, one hundred five thousand, four hundred eight".