1222105402 has 8 divisors (see below), whose sum is σ = 2095037856. Its totient is φ = 523759452.

The previous prime is 1222105373. The next prime is 1222105447. The reversal of 1222105402 is 2045012221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1222105402² = 2987083227195163208, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1222105402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43646608 + ... + 43646635.

It is an arithmetic number, because the mean of its divisors is an integer number (261879732).

Almost surely, 2^1222105402 is an apocalyptic number.

1222105402 is a deficient number, since it is larger than the sum of its proper divisors (872932454).

1222105402 is an equidigital number, since it uses as much as digits as its factorization.

1222105402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87293252.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 1222105402 is about 34958.6241434070. The cubic root of 1222105402 is about 1069.1440448339.

Adding to 1222105402 its reverse (2045012221), we get a palindrome (3267117623).

The spelling of 1222105402 in words is "one billion, two hundred twenty-two million, one hundred five thousand, four hundred two".