1220351122 has 8 divisors (see below), whose sum is σ = 1832499900. Its totient is φ = 609517824.

The previous prime is 1220351081. The next prime is 1220351123. The reversal of 1220351122 is 2211530221.

It can be written as a sum of positive squares in 2 ways, for example, as 871371361 + 348979761 = 29519^2 + 18681^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 1220351122.

It is not an unprimeable number, because it can be changed into a prime (1220351123) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 326547 + ... + 330262.

Almost surely, 2^1220351122 is an apocalyptic number.

1220351122 is a deficient number, since it is larger than the sum of its proper divisors (612148778).

1220351122 is an equidigital number, since it uses as much as digits as its factorization.

1220351122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657740.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1220351122 is about 34933.5243283583. The cubic root of 1220351122 is about 1068.6322296867.

Adding to 1220351122 its reverse (2211530221), we get a palindrome (3431881343).

The spelling of 1220351122 in words is "one billion, two hundred twenty million, three hundred fifty-one thousand, one hundred twenty-two".