1220104512 has 112 divisors (see below), whose sum is σ = 3913022400. Its totient is φ = 369722880.

The previous prime is 1220104507. The next prime is 1220104517. The reversal of 1220104512 is 2154010221.

1220104512 is a `hidden beast` number, since 12 + 201 + 0 + 451 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (1220104507) and next prime (1220104517).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220104517) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 13087 + ... + 51102.

It is an arithmetic number, because the mean of its divisors is an integer number (34937700).

Almost surely, 2^1220104512 is an apocalyptic number.

1220104512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1220104512 is an abundant number, since it is smaller than the sum of its proper divisors (2692917888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1220104512 is a wasteful number, since it uses less digits than its factorization.

1220104512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64221 (or 64205 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 1220104512 is about 34929.9944460345. The cubic root of 1220104512 is about 1068.5602413484.

Adding to 1220104512 its reverse (2154010221), we get a palindrome (3374114733).

The spelling of 1220104512 in words is "one billion, two hundred twenty million, one hundred four thousand, five hundred twelve".