1220909104 has 20 divisors (see below), whose sum is σ = 2367462064. Its totient is φ = 609951168.

The previous prime is 1220909093. The next prime is 1220909117. The reversal of 1220909104 is 4019090221.

It is a happy number.

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 in 3 ways as a sum of consecutive naturals, for example, 11052 + ... + 50635.

Almost surely, 2^1220909104 is an apocalyptic number.

It is an amenable number.

1220909104 is a deficient number, since it is larger than the sum of its proper divisors (1146552960).

1220909104 is a wasteful number, since it uses less digits than its factorization.

1220909104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62932 (or 62926 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 1220909104 is about 34941.5097555901. The cubic root of 1220909104 is about 1068.7950753580.

Adding to 1220909104 its reverse (4019090221), we get a palindrome (5239999325).

The spelling of 1220909104 in words is "one billion, two hundred twenty million, nine hundred nine thousand, one hundred four".