1220331422 has 4 divisors (see below), whose sum is σ = 1830497136. Its totient is φ = 610165710.

The previous prime is 1220331379. The next prime is 1220331439. The reversal of 1220331422 is 2241330221.

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

It is a junction number, because it is equal to n+sod(n) for n = 1220331394 and 1220331403.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 305082854 + ... + 305082857.

It is an arithmetic number, because the mean of its divisors is an integer number (457624284).

Almost surely, 2^1220331422 is an apocalyptic number.

1220331422 is a deficient number, since it is larger than the sum of its proper divisors (610165714).

1220331422 is an equidigital number, since it uses as much as digits as its factorization.

1220331422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610165713.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1220331422 is about 34933.2423631131. The cubic root of 1220331422 is about 1068.6264793831.

Adding to 1220331422 its reverse (2241330221), we get a palindrome (3461661643).

The spelling of 1220331422 in words is "one billion, two hundred twenty million, three hundred thirty-one thousand, four hundred twenty-two".