1222104321 has 16 divisors (see below), whose sum is σ = 1837550400. Its totient is φ = 802574784.

The previous prime is 1222104307. The next prime is 1222104329. The reversal of 1222104321 is 1234012221.

It is a happy number.

1222104321 is a `hidden beast` number, since 1 + 22 + 210 + 432 + 1 = 666.

It is not a de Polignac number, because 1222104321 - 2⁹ = 1222103809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1222104294 and 1222104303.

It is not an unprimeable number, because it can be changed into a prime (1222104329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 335976 + ... + 339593.

It is an arithmetic number, because the mean of its divisors is an integer number (114846900).

Almost surely, 2^1222104321 is an apocalyptic number.

It is an amenable number.

1222104321 is a deficient number, since it is larger than the sum of its proper divisors (615446079).

1222104321 is an equidigital number, since it uses as much as digits as its factorization.

1222104321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675645 (or 675639 counting only the distinct ones).

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

The square root of 1222104321 is about 34958.6086822688. The cubic root of 1222104321 is about 1069.1437296006.

Adding to 1222104321 its reverse (1234012221), we get a palindrome (2456116542).

The spelling of 1222104321 in words is "one billion, two hundred twenty-two million, one hundred four thousand, three hundred twenty-one".