1222145122 has 32 divisors (see below), whose sum is σ = 2035189440. Its totient is φ = 545771520.

The previous prime is 1222145101. The next prime is 1222145137. The reversal of 1222145122 is 2215412221.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 1222145093 and 1222145102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 453154 + ... + 455842.

It is an arithmetic number, because the mean of its divisors is an integer number (63599670).

Almost surely, 2^1222145122 is an apocalyptic number.

1222145122 is a deficient number, since it is larger than the sum of its proper divisors (813044318).

1222145122 is a wasteful number, since it uses less digits than its factorization.

1222145122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3058.

The product of its digits is 640, while the sum is 22.

The square root of 1222145122 is about 34959.1922389520. The cubic root of 1222145122 is about 1069.1556275613.

Adding to 1222145122 its reverse (2215412221), we get a palindrome (3437557343).

The spelling of 1222145122 in words is "one billion, two hundred twenty-two million, one hundred forty-five thousand, one hundred twenty-two".