1222145422 has 4 divisors (see below), whose sum is σ = 1833218136. Its totient is φ = 611072710.

The previous prime is 1222145401. The next prime is 1222145429. The reversal of 1222145422 is 2245412221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×1222145422³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222145429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305536354 + ... + 305536357.

It is an arithmetic number, because the mean of its divisors is an integer number (458304534).

Almost surely, 2^1222145422 is an apocalyptic number.

1222145422 is a deficient number, since it is larger than the sum of its proper divisors (611072714).

1222145422 is an equidigital number, since it uses as much as digits as its factorization.

1222145422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611072713.

The product of its digits is 2560, while the sum is 25.

The square root of 1222145422 is about 34959.1965296687. The cubic root of 1222145422 is about 1069.1557150432.

Adding to 1222145422 its reverse (2245412221), we get a palindrome (3467557643).

The spelling of 1222145422 in words is "one billion, two hundred twenty-two million, one hundred forty-five thousand, four hundred twenty-two".