1222213123 has 8 divisors (see below), whose sum is σ = 1305013248. Its totient is φ = 1141884744.

The previous prime is 1222213117. The next prime is 1222213159. The reversal of 1222213123 is 3213122221.

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

It is a cyclic number.

It is not a de Polignac number, because 1222213123 - 2⁹ = 1222212611 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1222213123.

It is not an unprimeable number, because it can be changed into a prime (1222213163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 616915 + ... + 618892.

It is an arithmetic number, because the mean of its divisors is an integer number (163126656).

Almost surely, 2^1222213123 is an apocalyptic number.

1222213123 is a deficient number, since it is larger than the sum of its proper divisors (82800125).

1222213123 is a wasteful number, since it uses less digits than its factorization.

1222213123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1235873.

The product of its digits is 288, while the sum is 19.

The square root of 1222213123 is about 34960.1648022431. The cubic root of 1222213123 is about 1069.1754567131.

Adding to 1222213123 its reverse (3213122221), we get a palindrome (4435335344).

It can be divided in two parts, 122221 and 3123, that multiplied together give a palindrome (381696183).

The spelling of 1222213123 in words is "one billion, two hundred twenty-two million, two hundred thirteen thousand, one hundred twenty-three".