1220144122 has 4 divisors (see below), whose sum is σ = 1830216186. Its totient is φ = 610072060.

The previous prime is 1220144117. The next prime is 1220144137. The reversal of 1220144122 is 2214410221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2214410221 = 2083 ⋅1063087.

It can be written as a sum of positive squares in only one way, i.e., 977750361 + 242393761 = 31269^2 + 15569^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1220144122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305036029 + ... + 305036032.

Almost surely, 2^1220144122 is an apocalyptic number.

1220144122 is a deficient number, since it is larger than the sum of its proper divisors (610072064).

1220144122 is an equidigital number, since it uses as much as digits as its factorization.

1220144122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610072063.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 1220144122 is about 34930.5614326481. The cubic root of 1220144122 is about 1068.5718046238.

Adding to 1220144122 its reverse (2214410221), we get a palindrome (3434554343).

The spelling of 1220144122 in words is "one billion, two hundred twenty million, one hundred forty-four thousand, one hundred twenty-two".