1220611466 has 4 divisors (see below), whose sum is σ = 1830917202. Its totient is φ = 610305732.

The previous prime is 1220611429. The next prime is 1220611493. The reversal of 1220611466 is 6641160221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6641160221 = 27691 ⋅239831.

It can be written as a sum of positive squares in only one way, i.e., 1213477225 + 7134241 = 34835^2 + 2671^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305152865 + ... + 305152868.

Almost surely, 2^1220611466 is an apocalyptic number.

1220611466 is a deficient number, since it is larger than the sum of its proper divisors (610305736).

1220611466 is an equidigital number, since it uses as much as digits as its factorization.

1220611466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610305735.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 1220611466 is about 34937.2504069797. The cubic root of 1220611466 is about 1068.7082166171.

Adding to 1220611466 its reverse (6641160221), we get a palindrome (7861771687).

The spelling of 1220611466 in words is "one billion, two hundred twenty million, six hundred eleven thousand, four hundred sixty-six".