1220010008 has 32 divisors (see below), whose sum is σ = 2617628160. Its totient is φ = 522197280.

The previous prime is 1220009993. The next prime is 1220010059. The reversal of 1220010008 is 8000100221.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 1220009974 and 1220010001.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 31985 + ... + 58847.

It is an arithmetic number, because the mean of its divisors is an integer number (81800880).

Almost surely, 2^1220010008 is an apocalyptic number.

It is an amenable number.

1220010008 is an abundant number, since it is smaller than the sum of its proper divisors (1397618152).

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

1220010008 is a wasteful number, since it uses less digits than its factorization.

1220010008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27687 (or 27683 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1220010008 is about 34928.6416569554. The cubic root of 1220010008 is about 1068.5326519566.

Adding to 1220010008 its reverse (8000100221), we get a palindrome (9220110229).

The spelling of 1220010008 in words is "one billion, two hundred twenty million, ten thousand, eight".